AI agents for business finance: what they can and can't do
What AI agents can do in bookkeeping, close, collections and compliance today, where a person must stay in charge, and how to judge a product.
The short answer
As general guidance: HMRC says UK self-employed people must keep records for at least five years after the 31 January submission deadline for the tax year; the IRS generally uses three years from filing, with longer periods in some cases; and the CRA generally expects six years from the end of the last tax year they relate to. An AI agent can file each receipt, invoice and statement against the right transaction so the record is complete when you need it.
Record-keeping is the least glamorous part of working for yourself, and the one that matters most when a tax authority asks a question. The rules differ by country, but the principle is the same everywhere: keep evidence for every figure in your return, for long enough. This is general information from official sources, not tax advice.
Retention periods at a glance
| Country | General rule | Source |
|---|---|---|
| UK | At least 5 years after the 31 January submission deadline of the relevant tax year; longer in some cases, such as a very late return | GOV.UK |
| US | Generally 3 years after filing; 6 years if income is substantially under-reported; 7 years for a bad-debt or worthless-securities loss claim; employment tax records at least 4 years | IRS |
| Canada | Generally 6 years from the end of the last tax year the records relate to | CRA |
| Nigeria | Check current guidance from the Nigeria Revenue Service or an adviser | NRS |
Worked UK example, for illustration: records for the 2025–26 tax year support a return due by 31 January 2027, so on GOV.UK's rule they should be kept until at least 31 January 2032.
What to keep
- Sales invoices and records of all income, in every currency
- Receipts for expenses
- Bank and payment statements for every business account
- Contracts and agreements with clients and subcontractors
- Records of money taken out for personal use
- Exchange rates used for foreign-currency income and costs
- Records for any assets, such as equipment, until the period runs out for the year you dispose of them, as the IRS notes for property
If you employ anyone, payroll records have their own rules. See paying subcontractors for contractor records.
Digital records
Tax authorities generally accept digital records if they are complete, legible and can be produced on request. In the UK, Making Tax Digital for Income Tax requires digital records for those in scope, with thresholds phasing in. A photograph of a receipt linked to the matching bank transaction is more useful than a box of paper, provided you can still read it years later.
How an AI agent keeps the record complete
- Captures each receipt and invoice as it arrives, from email or a photo.
- Matches it to the bank transaction, in its own currency.
- Categorises it under rules you set, flagging anything it is unsure about.
- Chases gaps: a transaction with no receipt goes on a short list for you.
- Keeps a trail: where each document came from and when it was matched.
- Holds retention dates, so nothing is deleted early.
Our explainers on AI bookkeeping and AI bank reconciliation cover the matching in more detail.
Separate business and personal money
Records are far easier to keep if business money runs through its own account. When personal and business spending mix, every transaction has to be sorted, and drawings are easy to miss. A separate account, with personal withdrawals recorded as drawings, makes the agent's matching more accurate and your return easier to support.
If you are asked for records
If a tax authority opens an enquiry or audit, you will usually be asked to produce records for specific periods or items. With records matched to transactions, you can find each one quickly. Do not delete anything relating to a period under enquiry, even if the normal retention period has passed, and take advice if the request is complex. The agent should hold a "do not delete" flag on any period you mark.
Records in more than one currency
If you earn in several currencies, keep each transaction in its original currency together with the rate used to convert it for your tax return, and the source of that rate. Tax authorities publish guidance on acceptable rates; the important thing is to apply a method consistently and be able to show it.
Where the agent stops
- It can categorise, but whether an expense is allowable is a tax question for you or an adviser.
- It can flag a missing receipt, but cannot create one. Never accept a reconstructed receipt as if it were original.
- It can hold retention dates, but you decide when to delete, after checking nothing is under enquiry.
A worked example
Example only. Grace, a freelance translator in Ottawa, earns in C$, US$ and euros. Her agent matches each payment to the invoice, records the exchange rate used, and files expense receipts from her email. In March, it lists six transactions with no receipt. She finds four; for the other two she notes what they were. Her records for 2025 are set to be kept until at least the end of 2031 under the CRA's six-year rule.
Where Pryme fits
The Pryme Business Finance agent traces every figure to a posted journal with a named source and every balance to a live bank feed, across NGN, USD, GBP and EUR balances. The Compliance agent keeps an obligations register with filing dates. Neither replaces advice on what is deductible.
Questions people ask
How long do I keep records as a UK sole trader?
GOV.UK says at least 5 years after the 31 January submission deadline of the relevant tax year.
How long does the IRS say to keep records?
Generally 3 years from filing, with longer periods in some situations, such as 6 years for substantial under-reporting.
How long does the CRA expect records to be kept?
Generally 6 years from the end of the last tax year they relate to.
Are photos of receipts acceptable?
Tax authorities generally accept digital records that are complete and legible. Check the rules in your country.
Sources
- GOV.UK: Business records if you're self-employed, how long to keep them · accessed Oct 2026
- IRS: How long should I keep records? · accessed Oct 2026
- CRA: Keeping records · accessed Oct 2026
- GOV.UK: Check when to sign up for Making Tax Digital for Income Tax · accessed Oct 2026
This article is general information, not financial, legal or tax advice. Products described are provided under the terms on this site and are subject to regulation and eligibility.