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
Run naira petty cash as a fixed float: staff spend from it, attach a receipt or signed voucher for each item, and the float is topped up by exactly the amount spent after a manager approves the log. In your Canadian books, record each top-up as expenses by category, converted to CAD at a rate source the CRA accepts; the Bank of Canada does not publish a naira rate. Keep the receipts for six years, with the records accessible in Canada.
Why petty cash needs a system
A Nigerian team spends small amounts every week: fuel for the generator, a courier, printing, a tip at the port, airtime for a work phone. Individually they are small. Added up across a year they are real expenses that your Canadian company wants to deduct, and real money that can leak if no one checks. The CRA's guide on business records asks for a receipt or voucher for each purchase and says expenses you cannot support may be disallowed.
Set it up as an imprest float
The imprest method keeps petty cash simple: the float is a fixed amount, and at any moment cash in hand plus receipts equals the float.
- Set the float (for example ₦200,000) and name one custodian in Nigeria.
- Write a short policy: what petty cash can be used for, the most a single spend can be, and who approves top-ups.
- Every spend gets a receipt; where the seller cannot give one, the spender fills a voucher with date, payee, item and amount, and signs it.
- At the end of each week or month, the custodian sends the log and scanned receipts; a manager in Canada reviews and approves.
- Top up by exactly the amount spent, so the float returns to the fixed figure.
Worked example (illustrative)
Example: a ₦200,000 float. During the month the custodian spends ₦38,500 on diesel, ₦62,000 on a courier to a client in Abuja and ₦15,000 on printing. Total spent: ₦38,500 + ₦62,000 + ₦15,000 = ₦115,500. Cash in hand should be ₦200,000 − ₦115,500 = ₦84,500. If the count is ₦84,000, record the ₦500 difference as a shortage and ask why. The top-up is ₦115,500.
What each receipt should show
The CRA's T4002 guide (Rev. 25) lists what a receipt should show:
- the date of purchase
- the seller's name and address
- the buyer's name and address
- a full description of the goods or services
- the vendor's business number, where the vendor is a GST/HST registrant and the pre-tax price is $100 or more (this applies to Canadian vendors, not Nigerian ones)
Many Nigerian receipts are handwritten or have no description. The guide's answer for a till slip with no description is to write what the item was on the receipt or in your expense records. Do the same for Nigerian receipts, and translate any line that is not in English or French.
Converting naira into CAD
The CRA's Income Tax Folio S5-F4-C1 makes the Bank of Canada rate for the day the default. The Bank of Canada does not publish a naira rate, so you need another source that the folio accepts: widely available, verifiable, independent, market-recognised, and used consistently from year to year. The folio also says the CRA may accept an average rate for a period for practical reasons, but generally not where rates move significantly.
For petty cash, a sensible approach is to convert each top-up at the rate on the top-up date from one named source, and note the source in your accounting policy. Example: a ₦115,500 top-up at an illustrative 1 CAD = ₦1,100 is CAD 105.00 of expenses (₦115,500 ÷ 1,100), split across fuel, courier and printing in the proportions of the receipts. If you buy the naira first with Canadian dollars, the actual conversion cost can also anchor the figure; ask your accountant which policy to follow, and see keeping books in CAD, naira and USD.
Controls that keep the float honest
- Separate duties: the custodian spends, someone else approves the top-up.
- Surprise counts: a video call once a quarter where the custodian counts the cash on camera.
- A per-spend limit: anything above it goes through the normal supplier payment route with an invoice.
- No personal loans from the float, ever, however small.
- A yearly review of the float size: if it is topped up every week, it is too small; if it barely moves, reduce it.
Keeping the records
The CRA says records must generally be kept for six years from the end of the last tax year they relate to, at your place of business or residence in Canada unless it gives written permission otherwise. Scanned receipts held only on a server in Lagos are not the same as records kept in Canada, so keep the scans in your Canadian accounting system. For supplier invoices rather than petty cash, see CRA receipts for Nigerian supplier costs; our Nigeria site has a petty cash log template.
Where Pryme fits
Many teams replace most petty cash with small transfers from a naira account, which leaves a record of every spend. In a Pryme Business Account, each transfer has a receipt, and any customer can generate a verifiable receipt or statement with VerifyDoc.ai (receipts) that a reviewer can check is unaltered. The Finance agent can match receipts to the log; top-ups wait for a person's approval.
Questions people ask
How do I record petty cash spent in Nigeria for a Canadian company?
Record each top-up as expenses by category, supported by receipts or signed vouchers, converted to CAD at a rate source the CRA accepts, used consistently.
What exchange rate should I use for naira petty cash?
The Bank of Canada has no naira rate, so use an independent, verifiable, market-recognised source consistently, as Folio S5-F4-C1 describes.
Do Nigerian receipts count for CRA purposes?
Yes, if they support the expense. Write a description on receipts that lack one and translate anything not in English or French.
How long should I keep petty cash receipts?
Generally six years from the end of the last tax year they relate to, with the records kept or accessible in Canada.
Sources
- CRA: Guide T4002, Chapter 1 business records (Rev. 25, 2026) · accessed Oct 2026
- CRA: Income Tax Folio S5-F4-C1, Income tax reporting currency (updated 27 Jun 2024) · accessed Oct 2026
- Bank of Canada: Daily exchange rates (table dated 23 Oct 2026) · accessed Oct 2026
- CRA: Where to keep your records, for how long (modified 3 Aug 2026) · 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.