Best Document Management Software for M&A in 2026 (Ranked)

TL;DR: Document management in M&A is three jobs: drafting files inside your team, controlling what each outside party sees, and keeping a record of what was disclosed. No single tool leads all three. Here is the short version, with prices only where the vendor publishes one.

• The controlled side of the deal: For most mid-market deal teams, Peony (our product) is the strongest fit. One room covers NDA-gated per-buyer links, folder-level permissions, page-level analytics, Upload new version with version history, Visitor Q&A, AI document Q&A and unlimited e-signatures. The Data Room plan is $52 per admin per month billed yearly, and viewers are free.
• Bank-run mega-auctions: Datasite and SS&C Intralinks sell a module for each phase, from deal prep to post-close archive. Both are quote-based.
• Traditional VDR: iDeals offers Core, Premier and Enterprise plans, all quote-based.
• Request-list-driven buy-side diligence: DealRoom prices by deal volume, with unlimited users.
• Internal drafting before launch: SharePoint/OneDrive, Box and Google Drive are where files get written. They have no NDA gate or per-buyer page analytics, and Google Drive may permanently delete an old version of an uploaded PDF after 30 days or once there are 100 newer versions, unless you mark it Keep forever (Google).
• Governed file platform: Egnyte lists $22 to $48 per user per month paid annually; dynamic watermarking and e-signature come on Elite, and a Document Room add-on for deals is sold by quote.
• Counsel's matter files: iManage (Chicago) and NetDocuments (Lehi, Utah) are law-firm document management systems. Neither publishes pricing.

I'm Sean Yu, co-founder of Peony. Before Peony I worked in M&A at Nomura, then invested at Backed VC and on the growth-equity and secondaries desk at Target Global, so I've watched deal documents live in every tool on this list, and once in a seller's personal Dropbox. I run Peony, a data room company, which means one tool on this page is ours. I flag it every time it comes up.

Most "best document management software" lists treat M&A like any other file-storage problem. It isn't. A deal document has a life: it's drafted internally, numbered into an index, released to some buyers and not others, revised mid-diligence, questioned, signed against, and finally frozen as the record of what was disclosed. This guide ranks 11 tools by how well they handle that lifecycle, shows which phases each one actually covers, and lists what breaks when you run diligence out of general file storage.

How we evaluated: I scored each tool on the phases of a deal: preparing and indexing the room, controlled distribution (NDA gate and per-buyer permissions), version control mid-deal, buyer Q&A, signing, analytics and the post-close archive. Prices are list prices from each vendor's own pricing page, checked on October 19, 2026. "Quote-based" means the vendor publishes no price, and I don't guess one. Microsoft 365, Google Workspace and Box price per user and show prices by region, so for them I give the pricing basis rather than a figure that may not match your country. Headquarters come from vendors' own contact pages or SEC filings. This is desk research of vendor pages and documentation plus my own deal-side experience, not a hands-on test of every enterprise tool. Peony is our product, so read its entries with that in mind.

Quick picks: which document management tool fits each M&A job?

Peony is our product, and it's the pick only for the controlled, buyer-facing side of a mid-market deal. Drafting, mega-auctions and counsel's matter files go to other tools.

What is document management software for M&A?

Document management software for M&A is any system that stores, organizes, versions and controls access to deal documents during a transaction. It comes in three kinds: virtual data rooms built for outside parties, cloud storage and file platforms built for your own team, and legal document management systems built for counsel's matter files.

The dividing line is who reads the file. Internal tools assume the reader is a colleague who will still be a colleague next month. A data room assumes the reader is a bidder who may lose the auction and walk away with whatever they saw, so it gates, permissions, watermarks and logs every view.

What are the best document management tools for M&A in 2026?

For a mid-market deal team, the ranking is Peony for the controlled side of the deal, Datasite and Intralinks for bank-run auctions, iDeals and DealRoom as specialist rooms, then the internal tools (SharePoint, Box, Google Drive, Egnyte) and counsel's systems (iManage, NetDocuments) that feed the room. Each entry gives what it's best for, its pricing, its headquarters and its key feature.

1. Peony (our product): best for mid-market deal teams that want one tool for the controlled side

• Best for: Sell-side and buy-side processes from $1M to $500M where one deal team runs the index, the NDA, buyer access, versions, Q&A and signing.
• Pricing: Business $30, Data Room $52 and Deal Team $64 (minimum 4 admins) per admin per month billed yearly; Enterprise is custom. Viewers are free and unlimited: you pay per admin, not per viewer or per data room. Business includes 3 data rooms per admin and 100 GB of storage with files up to 5 GB; Data Room and above have unlimited rooms and storage. See pricing.
• HQ: San Francisco, California.
• Key feature: Upload new version replaces a file in place, keeping its position, its link and every earlier version, while per-group permissions decide which buyers see it.

Here is how Peony covers the lifecycle. Dragging a folder into a room keeps its structure. On the Data Room plan, AI room generation proposes a folder tree from a one-line description of the deal, and Index documents numbers every folder and file (1, 1.1, 1.2) so both sides can say "open 2.3", with Export index downloading the list for the process letter. Each buyer group gets its own permission table at four levels (No access, View, Download, Upload) on every folder and file, its own NDA gate and its own dynamic per-viewer watermark. Mid-diligence, Upload new version swaps in the revised model without breaking the link buyers already have. Visitor Q&A keeps each bidder's questions inside its own question team, AI document Q&A answers your team's and buyers' questions with page citations, and e-signatures are unlimited from Business, each stored with a timestamp, IP address and verification hash.

Peony has 8,000+ customers in 60+ countries and is trusted by 250+ M&A advisors, including Jefferies and Bank of America. In our State of M&A Data Rooms report (Q2 2026 edition), the median time from sign-up to first uploaded document was 4 min 19 s. Everyone you speak to on Peony support has M&A experience at elite boutiques or bulge-bracket banks, VC experience, or has raised $1M+ themselves.

Where Peony isn't the tool: it's not a co-authoring or sync platform. Drafts still get written in Word and Excel on SharePoint, Box or Google Drive, and Peony doesn't sync with them, so you upload final versions. The per-visitor audit trail can't be exported yet (the room-wide analytics CSV can, from Business), and downloading a whole room as an archive is a Deal Team feature. Peony also renders .html files live, such as an interactive model built with Claude or ChatGPT, behind the same NDA gate and permissions; live HTML carries no watermark, so share a PDF alongside it where you need a traceable copy.

When to choose Datasite or Intralinks instead: a bank running a 40-bidder global auction that wants a vendor-staffed Q&A desk at mega-deal scale. Below that, Peony gives the same deal team the core controls on a flat per-admin bill.

An M&A advisor who chose Peony put the trade-off this way:

"We selected Peony after a serious review focused on the requirements of a disciplined M&A process: multiple buyer groups, tiered permissions, NDA controls, engagement analytics, document security, and responsive transaction support. Peony provides the core functionality, professionalism, and security buyers, investors, advisers, and counsel expect, while remaining simpler and more cost-effective than many legacy VDR platforms. I would be comfortable recommending Peony for M&A mandates (buy- and sell-side) and capital market transactions in the middle market."

Kevan Fight, GreenTech Global Group Advisory (M&A advisor, 35+ years of data room experience)

2. Datasite: best for bank-run sell-side auctions

• Best for: Bank-run processes with many bidder groups, large page counts and cross-border buyers.
• Pricing: Quote-based.
• HQ: Minneapolis, Minnesota (Datasite LLC).
• Key feature: A named module for each phase: Prepare for deal staging, Diligence (sell-side) and Acquire (buy-side) rooms, and Archive after close, with Grata for sourcing and Blueflame AI inside the room (Datasite).

Datasite's site lists Datasite Assist, its support team, as available 24/7/365 in 20+ languages. If a bulge-bracket or large mid-market bank runs the auction, you'll probably be in Datasite or Intralinks whether you picked it or not, and on those processes the bank's familiarity with the platform is worth the premium. For what drives a Datasite quote, see our Datasite pricing guide.

3. SS&C Intralinks: best for large banks and cross-border deals

• Best for: Large banks and cross-border transactions where the bank's standard VDR is a given.
• Pricing: Quote-based.
• HQ: Boston, Massachusetts; owned by SS&C Technologies since 2018.
• Key feature: Separate modules by phase: Prep for self-launched deal preparation, Marketing for buyer outreach, Diligence and VDRPro for the room, DealVault for archiving past deals, and Deal Services for redaction, translation and NDA management (Intralinks).

Intralinks splits document management by phase more than most rooms do, which suits a bank that wants the same vendor from the teaser to the archive. Each module is quoted; see our Intralinks pricing guide.

4. iDeals: best for a traditional VDR with tiered service

• Best for: Mid-market to enterprise teams that want a traditional VDR with tiered service levels.
• Pricing: Quote-based on all three plans (Core, Premier and Enterprise). Core covers a single project with five administrators and unlimited users.
• HQ: Offices in London, New York and Hong Kong.
• Key feature: AI-powered redaction and eSignature on Core, AI chat with documents on Premier, and an MCP connector for Claude and Copilot on Enterprise.

For a head-to-head on how the two handle a diligence room, see iDeals vs Datasite.

5. DealRoom: best for request-list-driven buy-side diligence

• Best for: Buy-side and corporate development teams running request-list-driven diligence through to integration.
• Pricing: Quote-based and priced by deal volume, with unlimited users, no per-document charges and an annual commitment (DealRoom).
• HQ: Founded in Chicago in 2012 by a founder who ran a boutique M&A practice.
• Key feature: Request lists tied to the documents that answer them, carried forward into post-merger integration.

When to choose DealRoom instead of Peony: a buy-side or corporate development team working through a long request list across several workstreams, where tracking who owes which document matters more than gating bidders. On the sell side, buyer questions usually run as Q&A inside the room.

6. Microsoft SharePoint and OneDrive: best for internal drafting before the room opens

• Best for: Deal teams already on Microsoft 365 drafting, co-authoring and reviewing documents before anything goes to a buyer.
• Pricing: Included in Microsoft 365 business and enterprise plans, priced per user per month; Microsoft shows the price for your region.
• HQ: Redmond, Washington (Microsoft).
• Key feature: Co-authoring in Word, Excel and PowerPoint, with version history limits that admins set by count or age for the whole organization, a site or a single library (Microsoft Learn).

SharePoint is where many deal teams draft the CIM, the model and the disclosure schedules, and inside a Microsoft 365 firm it's hard to beat for that. The trouble starts when a bidder needs access: there's no NDA gate before a file opens, no per-buyer page analytics and no buyer Q&A, and guest access depends on your tenant's sharing policy. When to choose SharePoint instead of a data room: every reader sits inside your tenant, such as the deal team and counsel on guest accounts. Our data room vs SharePoint comparison goes deeper.

7. Box: best for companies standardized on governed cloud content

• Best for: Corporate sellers and acquirers that already run their content on Box.
• Pricing: Per user per month, with a 3-user minimum on business plans (Box pricing).
• HQ: Redwood City, California.
• Key feature: Version history by plan: 50 versions per file on Business and Business Plus, 100 on Enterprise and unlimited on Enterprise Plus. Watermarking starts on Enterprise.

Box is a strong governed content platform, and many corporate sellers already have it. For a sale process, check the plan before you lean on it: watermarking and longer version history both sit on the upper tiers. See data room vs Box.

8. Google Drive: best for founders and small teams drafting together

• Best for: Founders and small teams on Google Workspace drafting and sharing internally.
• Pricing: Included in Google Workspace, priced per user per month by region; Business Starter includes 30 GB of pooled storage per user and Business Standard 2 TB (Google Workspace).
• HQ: Mountain View, California (Google).
• Key feature: Real-time co-editing in Docs, Sheets and Slides. For uploaded files such as PDFs, Drive may permanently delete a version after 30 days or once there are 100 newer versions, unless you mark it Keep forever.

Drive is the default for founders, and it's excellent for drafting. For diligence, two things bite: an anyone-with-the-link share lets a file travel past the buyer you sent it to, and old versions of uploaded PDFs and spreadsheets can drop off unless someone marks them Keep forever. See data room vs Google Drive.

9. Egnyte: best for a governed file platform with a deal add-on

• Best for: Mid-size firms that want one governed file platform for internal content, with an optional Document Room for deals.
• Pricing: Business $22, Enterprise Lite $39 and Elite $48 per user per month paid annually; Ultimate and the Document Room add-on are quoted (Egnyte pricing).
• HQ: Mountain View, California.
• Key feature: Automatic version history and file locking in the base platform; Elite adds dynamic watermarking, e-signature and PDF markup, and the Document Room add-on is described as "an ultra-secure data enclave for M&A, capital raise, investor relations, and more."

Egnyte makes most sense when your firm already runs on it, since Business includes Microsoft 365 co-editing alongside its own versioning. If you're choosing a deal tool from scratch, compare the Document Room quote with a purpose-built data room on NDA gating, buyer Q&A and per-buyer analytics.

10. iManage: best for law firms' matter files and closings

• Best for: Law firms and corporate legal teams managing matter files, email and closing sets.
• Pricing: Quote-based.
• HQ: Chicago, Illinois.
• Key feature: Document and email management organized around matters, with iManage Share for external file sharing and Closing Folders for transaction closings (iManage).

11. NetDocuments: best for a cloud-native legal DMS

• Best for: Law firms and in-house legal teams that want a cloud-native legal document management system.
• Pricing: Quote-based.
• HQ: Lehi, Utah.
• Key feature: Files email automatically by client, matter and topic, with a Legal AI Assistant that answers questions across one or hundreds of documents (NetDocuments).

When to choose iManage or NetDocuments: you're counsel, or you're coordinating with counsel who already runs one. They manage the law firm's matter file; they don't replace the data room buyers read. iManage's Closing Folders is worth knowing about when signature pages and closing sets pile up at the end.

Two more rooms belong on a mid-market shortlist. Firmex (Toronto) sells a single-project room or an annual subscription with unlimited projects, both quote-based, and Ansarada, now part of Datasite, prices through a quote builder. For the full field ranked, see our top 10 virtual data room providers.

Which tool covers which phase of the deal?

Data rooms own the controlled middle of a deal (per-buyer permissions, the NDA gate, buyer Q&A and the disclosure record), cloud storage owns drafting, and legal DMS own counsel's matter file. Here is the full matrix, phase by phase. Cells describe what each vendor documents on its own site; where a vendor doesn't list a feature, we say so rather than guess.

Read the matrix as a handoff, not a contest. Draft in the internal tools, move final files into a data room when the first NDA is signed, and hand the archive to counsel's DMS after close. The mistake is stretching one tool across a phase it wasn't built for, which is what the next section is about.

What breaks when you run diligence out of SharePoint, Google Drive or Box?

What breaks is control once a file leaves your team: who can open it, which version they read, what they asked and what you can prove they saw. These are the ten failure modes I see most often, with the fix for each.

1. New files inherit the folder's sharing. You drop the customer contracts into the shared "Commercial" folder, and every bidder with access to that folder can open them before you've decided who should. Fix: separate buyer groups with their own permissions, and hide new content by default before you upload anything sensitive. To be fair, Peony has the same default (new uploads inherit access from existing groups) until you switch on Hide new content by default in the room's settings.
2. Links travel. An anyone-with-the-link share forwarded from a bidder's associate to a friend at a competitor still opens. Fix: require email verification so every viewer proves who they are, and use an allow or block list for domains (both on Peony Business).
3. "FINAL_v3" replaces nothing. Uploading a revised model as a new file creates a new link; buyers who bookmarked the old one keep reading stale numbers, and in Google Drive an old version of an uploaded file may be permanently deleted after 30 days or 100 newer versions. Fix: replace in place and keep the history. Peony's Upload new version keeps the file's position, its link and every earlier version.
4. No NDA before the first page. Access goes out by email while the NDA is still being chased, so someone reads before they sign. Fix: gate the room so the NDA is signed inside the link before any document opens; on Peony's Data Room plan, the signed PDF and its audit record stay with the room.
5. You can't see who read the QoE. File storage shows at most that a file was opened, not which pages a buyer spent twenty minutes on. Fix: page-level analytics per viewer. That's how you tell the two serious bidders from the tourists before second-round letters go out.
6. Q&A leaks across bidders. A shared tracker spreadsheet, or a reply-all, shows one bidder another bidder's question about customer churn. Fix: Q&A inside the room with a question team per bidder, so each team sees only its own questions and answers.
7. No traceable copies. A downloaded PDF without a watermark can't be traced to the person who leaked it. Fix: dynamic per-viewer watermarks; on a PDF in Peony, the viewer's watermark is written onto every page of the downloaded copy too. Box's watermarking starts on Enterprise and Egnyte's dynamic watermarking on Elite.
8. Revoking one bidder means unsharing file by file. When a buyer drops out after round one, you hunt through folders removing individual shares. Fix: one group per buyer, so revocation is one switch, plus an expiry date set in advance (expiry is on every Peony plan).
9. No index anyone can cite. "The lease in the real estate folder, second one down" doesn't survive a call with counsel. Fix: stable index numbers (1, 1.1, 1.2) and an exportable index for the disclosure schedule; Peony's Index documents does this on Data Room.
10. No disclosure record at close. After signing, the folder shows today's files, not what each buyer could see on the day they bid. Fix: keep the room's analytics export and an archive of the final room; on Peony, the analytics CSV is on Business and room archive download is on Deal Team.

None of this makes SharePoint, Box or Google Drive bad tools. They're the right place to write the documents. They just weren't built for the moment a stranger with a competing interest opens them.

How should you run document management across the deal lifecycle?

Run it as a handoff: draft internally, publish final files to a data room once the first NDA is signed, run versions, Q&A and signatures inside the room, and archive the room plus its activity record at close.

1. Before launch: Draft in SharePoint, Box, Google Drive or counsel's DMS. Agree the index with counsel, using our data room folder structure guide and what goes in a data room as the starting list.
2. Launch: Upload final versions only. Create one group per buyer or buyer tier, set folder permissions, turn on the NDA gate and watermarks, and click through the room as a buyer before sending links. In Peony, Duplicate gives you a clean copy so test clicks don't pollute buyer analytics.
3. First round: Share the teaser and CIM behind the NDA, then use page-level analytics to decide who gets second-round access.
4. Confirmatory diligence: Open sensitive folders to the remaining bidders, replace documents in place as they change, and run Q&A inside the room. A due diligence questionnaire keeps requests structured.
5. Signing and close: Disclosure schedules cite index numbers, and counsel assembles the closing set in their own system.
6. After close: Export the analytics, download the room archive, and duplicate the room into a fresh one for the integration team.

Datasite vs iDeals vs Intralinks: which is better for M&A document management?

Datasite and Intralinks are the better fit when a bank runs a large or cross-border auction, because both sell a module for every phase and banks already know them; iDeals suits mid-market to enterprise teams that want a traditional VDR with three plan tiers. All three are quote-based.

Ask each for a written quote for the same duration and volume. Then price the same process on a per-admin model: on Peony, Data Room is $52 per admin per month billed yearly with viewers free, so cost tracks the people who build the room, not the buyers who read it. Our iDeals vs Datasite comparison covers the two head to head.

What CRM works with document management and data room links?

No CRM doubles as a deal document system, so PE firms and advisors pair one with a data room and link each deal record to its room. Intapp DealCloud (quote-based) and Affinity (published from $2,000 per user per year) are the usual CRMs; boutiques also use Attio.

The data room does the document work: each counterparty gets its own link with page-level analytics, so the CRM record can point at the room instead of carrying attachments. On Peony's Deal Team plan, the API (enabled on request) can push room analytics and signed agreements into Salesforce or HubSpot. For CRM options and pricing, see best CRM for boutique private equity firms and the full stack in best M&A software.

What does M&A document management software cost?

Most deal-specific tools are quote-based. The published prices are Peony at $30 to $64 per admin per month billed yearly and Egnyte at $22 to $48 per user per month paid annually.

A worked example: a four-person deal team running one sale with 30 bidders on Peony's Data Room plan pays 4 × $52 × 12 = $2,496 a year, and the 30 bidders and their advisors read free. On Deal Team, which needs at least four admins, the same team pays $3,072 a year. Egnyte Elite for the same four internal users lists at $2,304 a year before any Document Room quote. An enterprise VDR for the same process is a quote, so ask for it in writing for your expected duration and volume.

Which document management setup should you choose?

Pick the setup by who runs the deal and who reads the documents:

• Sell-side boutique or mid-market advisor: Draft in SharePoint or Google Drive, run the process in Peony's Data Room plan, and use Datasite or Intralinks when a co-advising bank requires it.
• PE deal team: DealCloud or Affinity as the CRM, linked to Peony Deal Team rooms for buy-side diligence and portfolio exits, with counsel on iManage or NetDocuments.
• Corporate development: DealRoom for request-list-driven buy-side diligence, your SharePoint or Box for the integration team, and a data room for documents shared with sellers' advisors.
• Founder or CFO selling the company: Peony Business covers a simple process with an NDA gate, page-level analytics and unlimited e-signatures; move to Data Room when you need buyer groups, a signed NDA and Q&A.

If you want to see how the controlled side feels before committing, Peony's 7-day Data Room trial needs no credit card and never auto-charges (AI features switch on after you upgrade). It's the same product 8,000+ customers run their deals on, and you can compare it against the M&A solution page and plans side by side.

Peony is SOC 2 Type II-ready and ISO 27001-ready, with both audits underway. Documents are encrypted with AES-256 at rest and TLS 1.2 or higher in transit, Peony staff can't open the documents in your room, customer documents aren't used to train AI, and Peony has had no data breach since launch.

FAQ

What is the best document management software for M&A?

For most mid-market M&A deal teams, Peony (our product) is the strongest fit, because one tool covers NDA-gated buyer links, folder-level permissions, page-level analytics, version history, Q&A and e-signatures. Its Data Room plan is $52 per admin per month billed yearly, with viewers free. Datasite and Intralinks suit bank-run mega-auctions, SharePoint, Box or Google Drive suit internal drafting before the room opens, and iManage or NetDocuments suit counsel's matter files.

What is the difference between a virtual data room and a document management system?

A document management system is built for colleagues inside your organization to draft, co-author and file documents; a virtual data room is built for outside parties such as bidders, who need to be gated, permissioned, watermarked and tracked. In M&A you usually need both: SharePoint, Box, Google Drive or a legal DMS such as iManage for drafting, and a data room for the documents buyers read. The handoff point is the NDA.

Can you use SharePoint as a data room for M&A due diligence?

You can, but SharePoint is built for internal collaboration: it has no NDA gate before a file opens, no page-level analytics per buyer and no buyer Q&A, and guest access depends on your tenant's sharing settings. It works when every reader sits inside your organization or on your counsel's guest accounts. Once outside bidders need access, move final versions into a data room and keep SharePoint for drafting.

Is Google Drive or Box good enough for due diligence documents?

For internal drafting, yes; for buyer-facing diligence, usually not. Neither has an NDA gate before access or page-level analytics per buyer, Box's watermarking starts on its Enterprise plan, and Google Drive may permanently delete an old version of an uploaded PDF after 30 days or once there are 100 newer versions, unless you mark it Keep forever. A data room keeps the disclosure record those tools don't.

Datasite vs iDeals: which is better for M&A due diligence document management?

Datasite is the better fit for bank-run, large or cross-border auctions, with named modules for deal prep (Prepare), sell-side and buy-side rooms (Diligence and Acquire) and post-close storage (Archive). iDeals suits mid-market to enterprise teams that want a traditional VDR with tiered plans; its Core plan covers one project with five administrators and unlimited users. Both are quote-based, so get written quotes for the same duration and volume.

How do Datasite and Intralinks differ for M&A document management?

Both are quote-based enterprise VDRs that banks standardize on, and both sell modules by deal phase. Datasite names Prepare, Diligence, Acquire and Archive, with Grata for sourcing; SS&C Intralinks names Prep, Marketing, Diligence and DealVault for archiving, plus Deal Services for redaction, translation and NDA management. On a bank-run deal, the bank's existing platform usually decides it.

Do law firms use iManage or NetDocuments for M&A?

Yes. Deal counsel commonly keep the matter file, drafts and email in a legal document management system such as iManage (Chicago) or NetDocuments (Lehi, Utah), and iManage adds Closing Folders for transaction closings. These systems manage counsel's own files; buyers still read diligence documents in a data room. Neither vendor publishes pricing.

What CRM works for PE with document management and data room links?

Most PE firms run Intapp DealCloud or Affinity as the CRM and link each deal record to a data room, because CRMs aren't built for NDA-gated document sharing. Peony fits that pairing: each counterparty gets its own link with page-level analytics, and on the Deal Team plan Peony's API (enabled on request) can push room analytics and signed agreements into Salesforce or HubSpot. Affinity publishes pricing from $2,000 per user per year; DealCloud is quote-based.

How should you organize documents before M&A due diligence?

Agree the index before you upload: numbered top-level folders (corporate, financial, tax, legal, commercial, people, IP and IT, real estate) that mirror the buyer's request list. Draft and review internally in SharePoint, Box, Google Drive or counsel's DMS, then move only final, approved versions into the data room. Keep one file per document so later revisions replace files instead of duplicating them.

How do you number a data room index for due diligence?

Number folders and files hierarchically (1, 1.1, 1.2, 2, 2.1) so buyers and counsel can say "open 2.3" on a call and the disclosure schedule can cite it. You can type numbers into file names by hand, but they don't renumber when you move things. Peony's Index documents setting (Data Room plan) numbers every folder and file, updates the numbers as items move, and Export index downloads the list.

How do you handle version control during M&A due diligence?

Replace documents in place instead of deleting and re-uploading, so the link, folder position and permissions survive, and keep every earlier version for the disclosure record. In Peony, Upload new version does exactly that: the file keeps its place and its link, and v1, v2 and later versions stay in the version menu for your team. Avoid "FINAL_v3" copies in cloud folders, which leave buyers reading stale numbers.

What is the best way to run due diligence Q&A?

Run Q&A inside the data room, not in email or a shared spreadsheet, so each question sits next to the documents and answers reach only the bidder who asked. Peony's Visitor Q&A (Data Room plan) keeps each bidder's questions in its own question team, and Deal Team adds assign-an-expert and approve-before-release routing. Buy-side teams working through long request lists often use DealRoom.

Which tools handle NDA e-signatures inside the data room?

Peony includes unlimited e-signatures from its Business plan ($30 per admin per month billed yearly), and on Data Room a signed NDA gates the room, with each signature stored with a timestamp, IP address and verification hash. iDeals lists eSignature on its Core plan and Egnyte on Elite. SS&C Intralinks offers NDA management through its Deal Services, and many banks still send NDAs through DocuSign before granting room access.

How should you archive deal documents after closing?

Archive the final state of the room and the record of who saw what, because that record backs up the disclosure schedule if a warranty is disputed later. Datasite (Archive) and SS&C Intralinks (DealVault) sell archive modules. In Peony, room archive download is on Deal Team, the analytics CSV exports from Business, and Duplicate copies the room into a fresh one for the integration team.

How much does document management software for M&A cost?

Enterprise VDRs (Datasite, Intralinks, iDeals) and legal DMS (iManage, NetDocuments) are quote-based. Among published prices, Peony runs $30 to $64 per admin per month billed yearly with viewers free, so a 4-admin team on Data Room pays $2,496 a year however many buyers read; Egnyte lists $22 to $48 per user per month paid annually. Microsoft 365, Google Workspace and Box price per user, shown by region.

Is Peony secure enough for M&A document management?

Peony is built for M&A diligence and is trusted by 250+ M&A advisors, including Jefferies and Bank of America; it is SOC 2 Type II-ready and ISO 27001-ready, with both audits underway. Documents are encrypted with AES-256 at rest and TLS 1.2 or higher in transit, Peony staff can't open the documents in your room, customer documents aren't used to train AI, and Peony has had no data breach since launch. Enterprise adds SAML SSO, BYOK and EU-region hosting.

Is Egnyte a good document management tool for M&A?

Egnyte is a good internal file platform for mid-size firms, with automatic version history in the base platform and dynamic watermarking, e-signature and PDF markup on its Elite plan at $48 per user per month paid annually. For deals it sells a Document Room add-on through a specialist, priced by quote. If you're choosing a deal tool from scratch, compare that quote with a purpose-built data room on NDA gating, buyer Q&A and per-buyer analytics.

Related resources

• Best M&A Software in 2026: the full deal tool stack by category, from CRM to post-merger integration
• Best M&A Data Rooms: folder structure, staged access and Q&A workflow from the sell-side chair
• Data Room Folder Structure Guide: a numbered index you can adapt for your deal
• Virtual Data Room vs SharePoint: where SharePoint works in a deal and where it doesn't
• Virtual Data Room vs Box: whether Box is enough for due diligence
• Virtual Data Room vs Google Drive: the same question for Google Workspace teams
• Best Data Rooms for Due Diligence: rooms ranked by diligence workflow
• iDeals vs Datasite: two enterprise VDRs head to head
• Best CRM for Boutique Private Equity Firms: CRM options to pair with a data room
• State of M&A Data Rooms: our dataset of 334 M&A transactions from $1M to $500M
• Peony for M&A: how M&A advisors and deal teams use Peony
• Peony pricing: Business, Data Room, Deal Team and Enterprise plans