Signing & verification
Engagement letters, authorities and identity, signed and evidenced.
6 tools listed
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Annature
Signing & verification
Editor's pick
Digital signing and identity verification solution
Works withXero Practice ManagerFYIAccountKit
Australia onlyUnclaimed listing
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FuseSign
Signing & verification
Editor's pick
Digital signature software for accounting firms.
Works withXeroFYIAccountKit
Australia onlyUnclaimed listing
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Ignition
Proposals & engagement
Automate your agreements, billing, and payments effortlessly.
Works withXeroQuickBooksSlack+6
Australia onlyUnclaimed listing
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GoProposal
Proposals & engagement
Menu-based pricing and proposals for accounting firms, with a maintained engagement letter library behind them.
Works withXeroKarbonSenta
United Kingdom · United States · Australia · Canada onlyUnclaimed listing
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SignWell
Signing & verification
eSignature software for document signing
Works withXeroQuickBooks OnlineZapier
Unclaimed listing
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IdentityCheck
Signing & verification
Automated ID verification for accountants
Works withXero Practice ManagerKarbonFYI
Unclaimed listing
Choosing signing & verification software for a practice
Updated 4 September 2026, reviewed annually. By Trent McLaren.
Signing and verification tools do the evidential work of a practice: the electronic signature on the engagement letter, the tax authority authorisation and the financial statements, and the identity check that anti-money-laundering supervision, the tax authority or the firm's own risk policy requires before a client is taken on. The two sit together because they are both about proof: who signed, who they are, and when. This guide is about building onboarding and sign-off around them; the cards below are the tools.
Signing: from PDF to evidence
An emailed PDF with a typed name is a signature until someone disputes it. An electronic signing tool records who signed, from where, with what authentication, and produces a certificate the firm can show. For a practice the documents that matter are the engagement letter, the authority to act with the tax authority, the declarations on returns, the financial statements and the minutes. Some jurisdictions require a specific identity check before certain tax forms can be e-signed; the tool has to support that check, not just a drawn signature.
The practical value is speed: a return that used to wait a week for a printed signature is signed on a phone the same afternoon, and the busy season shortens.
Verification: knowing the client
Identity verification checks a person against a document and a liveness test, and a business against a register, and keeps the evidence. It is required by anti-money-laundering rules wherever accountants are supervised, increasingly by company registries, and by tax authorities for particular processes. A firm that verifies by photocopying a passport into a folder has evidence it cannot search, cannot re-verify and cannot show a supervisor quickly.
The tool should verify at onboarding, re-verify on a schedule the firm sets, screen against sanctions and politically exposed lists where the rules require it, and record the risk assessment beside the evidence.
What to look for
For signing: templates for the firm's standard documents, bulk sending for the season, reminders, an audit certificate, the jurisdiction-specific identity check where tax forms need it, and a link to the document system so the signed copy files itself against the client. For verification: document and liveness checks in the countries the firm's clients come from, business register checks, sanctions screening, scheduled re-verification, and an evidence pack a supervisor will accept.
For both: integration with the practice system so onboarding is one sequence, and with the proposal tool so acceptance, signature and identity happen in one visit.
Onboarding as one sequence
Firms that do this well have a single onboarding flow: proposal accepted, engagement letter signed, identity verified, authority to act signed, client created in the practice system with the folder made, all in one sitting from the client's phone. The tools are chosen to link, and the sequence is written down. That is the difference between a client who is set up in a day and one who is chased for a month.
Pricing and how firms recover it
Signing tools price per user or per envelope volume; verification tools per check, sometimes with a monthly minimum. The directory records what vendors publish; it does not say what a firm should charge for onboarding, and nothing here is fee advice. Firms describe treating signing as overhead and passing verification costs through in an onboarding fee or absorbing them inside the first year's engagement.
What to avoid
Typed-name signatures on anything evidential. Photocopied identity documents in folders. Verification at onboarding and never again. Signing tools that do not file the signed copy against the client. And onboarding as four separate emails when it can be one sequence.
Signing & verification software, answered
- What e-signature software do accounting firms use?
- The directory lists the signing and verification tools firms report running, and the Power Lists page shows which the most firms on The Firm list in their own stack. The deciding features are templates, bulk sending, an audit certificate, the identity check some tax forms require, and filing the signed copy to the client record.
- Do accounting firms need identity verification software?
- Wherever accountants are supervised for anti-money-laundering, and increasingly for company registry and tax authority processes. A tool verifies documents and liveness, checks business registers, screens lists, re-verifies on a schedule and keeps an evidence pack a supervisor will accept.
- How are signing and verification tools priced?
- Signing per user or per envelope volume; verification per check, sometimes with a monthly minimum. Each listing records the vendor's published prices where they are public. The Firm does not publish recommended fees for onboarding.
- What does good client onboarding look like?
- One sequence from the client's phone: proposal accepted, engagement letter signed, identity verified, authority signed, client and folder created in the practice system. The tools are chosen to link and the sequence is written down.
- Does The Firm charge vendors to be listed?
- No. Listing is free and claiming a listing is free. Paid placement is labelled as such, and every outbound link to a vendor carries a sponsored attribute. Paying never changes how a tool is described.
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