Kemi runs a pharmaceutical distribution business in Kano. She spends money every single day — diesel for the van, storage fees, packaging materials, driver allowances, cold chain supplies, regulatory fees. Real, documented business expenses.
When her accountant asked for her expense records at the end of the financial year, Kemi opened her bag and produced six receipts and two bank statements. Her accountant looked at her with the expression of a person who had seen this before.
"Where are the rest?"
"I'm not sure," Kemi said. "Some I paid cash. Some I just transferred. Some I lost."
Her accountant estimated that Kemi could not document roughly ₦1,400,000 in legitimate business expenses. That undocumented amount stayed in her taxable income. At her effective tax rate, she paid an estimated ₦350,000 in tax she did not legally owe — simply because she could not prove the expenses existed.
Nigerian business owners sometimes treat receipts as bureaucratic clutter. You spent the money. You know you spent it. Why does NRS need proof?
Here is why:
NRS cannot take your word for it. Tax systems are built on verifiable evidence. A business expense, to be deductible, must be provable — with a receipt, an invoice, a bank record, or some combination. "I definitely paid for it" is not a legal basis for a deduction.
The burden of proof is on you. In a tax assessment or audit, NRS starts from your declared income and applies the standard. If you claim expenses that reduce that income, you must demonstrate they were legitimate business costs. Without receipts, you cannot.
Cash payments are especially vulnerable. If you pay a supplier in cash and they do not issue a formal receipt, that expense may as well not exist from NRS's perspective. This is a significant problem in Nigerian markets where cash transactions are common.
The hidden cost: For every ₦100,000 in legitimate, undocumented expenses, a business liable for 30% CIT overpays approximately ₦30,000 in tax. Over five years, that compounds into a significant transfer of money you did not need to pay. (Small companies pay 0% CIT under the Nigeria Tax Act 2025 — but undocumented expenses still inflate taxable profit if NRS ever audits you.)
Most Nigerian MSMEs have never been audited. That does not mean audits do not happen — and as NRS modernises its systems and cross-references more data, the likelihood of an audit increases over time.
In an NRS audit, the inspector will typically:
① Request your books of account for the period under review
② Ask for receipts, invoices, and contracts supporting your expense claims
③ Cross-reference your declared revenue against invoice records, bank statements, and VAT filings
④ Disallow any expenses you cannot document
⑤ Raise additional assessments for tax on the disallowed amounts, plus interest and penalties
The penalties alone can be severe:
The audit does not have to be your fault to be expensive. It just has to happen when your records are poor.
Most Nigerian businesses spend significant amounts on diesel. If you buy fuel weekly or daily, those individual receipts are easy to lose — but cumulatively, they may represent ₦100,000–₦500,000 annually in provable expenses.
Fix: Ask your regular fuel supplier to provide monthly summary invoices, or photograph every receipt the moment you receive it.
Many Nigerian business owners buy supplies in open markets where sellers do not routinely give receipts. This is a known gap.
Fix: For regular suppliers, request a handwritten receipt. For one-off purchases, use bank transfers instead of cash wherever possible — the transfer record serves as evidence.
Drivers' allowances, tricycle (keke) fares for deliveries, fuel reimbursements — these accumulate quickly and are almost never documented.
Fix: Keep a simple note each week of transport costs paid, even if receipts are unavailable. A consistent, detailed contemporaneous record is better than nothing.
When your air conditioner breaks down or your delivery van needs work, you call someone and pay cash. The work gets done. The receipt gets lost.
Fix: For any repair above ₦10,000, insist on a written receipt. Most craftsmen and technicians will provide one if asked.
These are automatically documented in your bank statement — but only if you review your statements and reconcile them with your business expenses. Many business owners never do this.
Fix: Download your bank statements monthly and cross-reference them with your expense records in Lucrive.
Tax is the most dramatic reason to track receipts, but not the only one.
Accurate profitability calculations: Lucrive's pricing calculator shows you whether your prices are covering your costs. That calculation is only accurate if your cost data is complete. Missing expenses = artificially inflated apparent margins = prices set too low.
Budget accuracy: Your monthly budget is based on what you expect to spend. If you are missing 20% of your actual expenses, your budget is wrong and your forecasts are wrong.
Insurance claims: If your business experiences a theft, fire, or equipment failure, your insurance claim may require documentation of the items affected. A receipt stored digitally is retrievable. A paper receipt in a bag is not.
Bank or investor financing: Any bank or investor will ask to see your actual costs of operation. Undocumented expenses make your business look either more profitable or less credible than it actually is.
The Companies Income Tax Act and VAIDS frameworks require businesses to maintain proper books of account and financial records for a minimum of six years. This includes:
"Proper books" means organised, accessible, and cross-referenceable records — not a bag of papers or a phone gallery.
You do not need a complex system. You need one new habit:
Photograph every receipt the moment it is given to you.
Not later. Not when you get back to the office. The moment the supplier or vendor hands you the paper, take a photo. Upload it to Lucrive's receipt module. Done.
This habit, applied consistently, will:
Kemi started this practice after the audit scare. Twelve months later, her accountant presented her with a tax saving of ₦280,000 compared to the previous year — entirely from properly documented expenses she had always been spending but could never prove.
That money was always hers. She just needed a better system to keep it.
Every receipt you photograph today is one less problem at year-end. Every expense you cannot prove is potential tax money you are giving away unnecessarily.
Lucrive's receipt module is free. It takes less than 30 seconds per receipt. And twelve months from now, your organised records will be the difference between a stressful tax season and a straightforward one.
Store your first receipt free at lucrive.io →
Sources & further reading
People and businesses in our examples are illustrative, not real Lucrive customers. Figures are worked examples: confirm your own position with a qualified tax adviser.