Firmex

Firmex at a glance

Firmex is a long-established virtual data room built for the people who run deals for a living, corporate advisers, boutique M&A firms, accountants and lawyers managing recurring diligence. It has been in the market since the mid-2000s and has processed a very large number of transactions over that time, which shows in how little friction there is in day-to-day use.

We tested Firmex in June 2026, setting up a room, loading documents, and running it through the sort of permissioning and reporting tasks a New Zealand adviser would face on a mid-market sale or capital raise. The short version: it is not the flashiest room on the market, but it is one of the easiest to budget for and one of the least likely to trip up an external party.

Pricing: the flat-rate advantage

The reason advisers gravitate to Firmex is its pricing model. Rather than charging per page or per gigabyte, Firmex offers flat-rate, unlimited-data subscriptions for the contract term, typically bundling a set number of administrator licences with the option to add more. There is also a per-project (“pay-as-you-go”) option for one-off deals.

For anyone opening more than a couple of rooms a year, Firmex positions the unlimited subscription as saving roughly 25% or more versus stacking up per-project rooms, and in our experience that maths holds for busy advisory shops. Indicatively, expect flat-rate plans to sit around NZD 490/month and up depending on term and licences; treat that as a starting estimate only and confirm a quote directly, as pricing is not published and moves with deal volume. A free trial is available so you can size a room before committing.

The practical benefit for a New Zealand adviser is predictability. When you know a room costs the same whether it holds 200 pages or 20,000, you can quote clients confidently and stop worrying about a late data dump blowing the budget.

Security and compliance

Firmex covers the certifications most NZ counterparties and their lawyers will ask about. It holds SOC 2 and ISO/IEC 27001 certification, with data held in secure, certified data centres with disaster safeguards and mirror sites. On the document side you get the expected controls: granular permissions, dynamic watermarking, a “fence view” to deter screen capture, and strong encryption.

For due diligence on an NZ acquisition, a property syndication raise, or a fundraising round where investors want assurance, that is a solid baseline. As always, confirm the current certification scope directly with the vendor before you rely on it in a client engagement.

Where Firmex fits, and where it doesn’t

Firmex’s biggest strength is also, fairly, its ceiling. It is deliberately simple. External parties, buyers’ counsel, offshore investors, syndicate members, tend to log in and find their documents without a training call, which keeps a deal moving. The permissioning and audit reporting are more than enough for mid-market diligence.

What you give up is the deeper automation seen elsewhere. Firmex has fewer AI-assisted and workflow features than heavyweight platforms like Ansarada or Datasite, and it is less tailored to the largest, most complex enterprise transactions with hundreds of bidders and elaborate Q&A trees. For a busy adviser running a steady stream of mid-market deals, that trade is usually worth it; for a mega-deal, you may want a more feature-dense room.

Support is a genuine plus: Firmex offers 24/7 assistance, which matters when a New Zealand deal team is working across time zones with offshore parties.

Verdict

Firmex is a well-judged, honest product: predictable flat-rate pricing, the security certifications counterparties expect, and an interface that outside parties actually cope with. If you are an adviser or accountant running multiple mid-market due diligence rooms a year, it deserves a place on your shortlist and earns its best-value reputation.

It is a specialised choice tuned for high-volume advisory work rather than one-off raises. Startups opening a single room might weigh it against a lighter, self-serve option such as Ellty; see the full comparison for how the options stack up.

FAQ

How much does Firmex cost in New Zealand?

Firmex does not publish list prices; it quotes flat-rate, unlimited-data subscriptions or per-project rooms. As an indicative starting point, budget from around NZD 490/month for a flat-rate plan, but get a tailored quote, the real figure depends on term, number of rooms and administrator licences.

Is Firmex secure enough for M&A due diligence?

Yes. Firmex holds SOC 2 and ISO/IEC 27001 certification and offers granular permissions, dynamic watermarking, fence view and encryption, the controls most NZ lawyers and counterparties expect on a diligence room. Confirm the current certification scope with the vendor before relying on it.

Who is Firmex best for?

Advisers, boutique M&A firms, accountants and lawyers running recurring mid-market deals. The flat-rate pricing rewards anyone opening several rooms a year, and the simple interface keeps external parties moving without training.

How is Firmex different from Ellty?

Firmex is built around flat-rate value for high-volume advisers running recurring mid-market deals. Ellty is a lighter, self-serve room aimed at NZ startups and first-time fundraisers who want to open a secure room quickly. Which fits depends on your deal volume: Firmex for busy advisory shops, a self-serve tool for occasional one-off raises.

Does Firmex offer a free trial?

Yes. Firmex provides a free trial so you can set up a room and test the interface and permissions before committing to a subscription.