Home · Features · About · Blog · FAQ · Contact · Sign in

Simple Bookkeeping for Small Businesses in Nigeria

Keep five simple records: sales, expenses, stock, who owes you and what you owe. A 5-minute daily routine, tax record rules, and notebook vs app.

By the KudiAI Track team · 2026-10-07 · 7 min read

A shop owner records a sale on his phone while a customer pays

Simple bookkeeping means recording five things: sales, expenses, stock, who owes you and who you owe. It takes about five minutes at closing time. A notebook is enough to start.

You do not need to be an accountant. You need a habit, and a method you will actually keep.

What records does a small business need to keep?

Every small business, from a provisions shop to a salon, needs these five records:

Sales: the date, the item or job, the amount and how you were paid (cash, transfer or POS).
Expenses: every naira spent on the business, with the date and what it was for. Include small ones like a ₦200 levy or a ₦500 okada ride.
Stock: what you bought, from whom, the quantity and the cost price, plus what is left on the shelf.
Who owes you: name, phone number, what they took, the amount, the date and when they promised to pay.
Money you owe: the supplier or lender, the amount and the due date.

A service business, like a tailor in Aba, should also record deposits. If a customer pays ₦10,000 towards a ₦25,000 sewing job, write both figures. The ₦15,000 balance goes on your "who owes you" list.

How do I record daily sales? A 5-minute end-of-day routine

Write each sale down as it happens if you can. Then, at closing time, spend five minutes on this routine:

Add up today's sales, and mark any sold on credit.
Write down every expense paid today, even the small ones.
Count the cash, then check the transfers and POS payments that came in.
Check that opening cash, plus cash sales, minus cash spending, equals the cash in your drawer.
Update the debt list with new credit and any payments collected.
Note items running low, so you can buy them tomorrow.

Here is one day for a mechanic in Ibadan. The figures are examples.

Job	Charged	Paid today	How paid
Brake pads, labour	₦8,000	₦8,000	Transfer
Oil change, labour	₦3,000	₦3,000	Cash
Engine check	₦5,000	₦3,000	Cash
Fan belt, part and labour	₦9,500	₦9,500	Cash
Total	₦25,500	₦23,500	Cash and transfer

He started the day with ₦2,000 in cash. He received ₦15,500 in cash and spent ₦7,000 in cash: ₦4,500 for the fan belt, ₦1,000 on transport and ₦1,500 on food for his apprentices. So his drawer should hold ₦10,500.

If he counts only ₦9,500, then ₦1,000 has gone unrecorded. He should find it today, while he still remembers. The engine check customer still owes ₦2,000, so that goes on the debt list.

Do the count before you go home. Tomorrow you will not remember where the ₦1,000 went.

How do I separate business money from personal money?

When business and personal money are mixed, you cannot tell whether the business is making money. A few simple rules keep them apart:

Use a separate bank account or wallet for the business only.
Pay yourself a fixed amount each week or month, and record it as owner's pay.
If you take goods home for the family, write them down at cost price.
Pay house rent, school fees and family contributions from your own pay, not the drawer.

Why should I keep receipts?

Receipts prove what you paid and what you received. They settle arguments with suppliers and customers, and they back up your expense records at tax time.

Ask for a receipt or invoice every time you buy stock.
Keep paper receipts in one envelope per month, with the month written on it.
Take a photo of each receipt, because printed POS slips can fade.
Save transfer receipts, but confirm the money is in your account before releasing goods. A screenshot alone can be fake.

How do records help with tax?

Nigeria's new tax laws have applied since 1 January 2026. Under the Nigeria Tax Administration Act 2025, every person must keep books or records, whether or not they owe tax.

The Act also says:

Your records must have enough detail to work out your tax.
They should be in English. If yours are in another language, the tax office can demand a certified English translation, at your cost.
You must keep them for at least six years after the year of assessment the income relates to.
Every taxable person must file a yearly return, even when no tax is due. For business income, a statement of accounts you sign yourself can be used instead of audited accounts.

The Act sets a penalty of ₦10,000 for an individual, or ₦50,000 for a company, that fails to keep books.

Good records also protect you. If you run the business in your own name, income tax is worked out on your profit, not your total sales. Under the Nigeria Tax Act 2025, the first ₦800,000 of taxable income each year is taxed at 0%. Without reliable records, the tax office can assess you using benchmarks instead of your real figures.

This is general information, not tax advice. Confirm what applies to your business with the tax office or an accountant.

How do records help you get stock on credit?

Suppliers give goods on credit to traders they trust. Your records give them a reason to trust you.

Show a supplier how much you buy from them each month, and that past credit was paid on time. Your "money you owe" list is the proof. With it, you can ask for more goods on credit, or more time to pay.

How do records show your real profit?

Cash in your hand is not profit. Some of it must restock the shop, and some of your sales are still sitting with customers who owe you.

Once sales, expenses and stock are written down, you can work out profit properly. Our guide on how to calculate profit shows how, with Naira examples.

Notebook, Excel or an app: which is best?

The best method is the one you will use every day. Each has trade-offs.

Method	Good points	Weak points
Notebook	Cheap, needs no battery or data, easy to start	Slow to add up, can get wet or lost, no backup
Excel or Google Sheets	Adds up for you, good for monthly totals	Hard on a small phone screen, one wrong formula spoils the totals
Phone app	Totals, profit and debts update as you record, can back up online	Needs a smartphone, may need data to sync, bigger plans may cost money

You can start with a notebook and move to a spreadsheet or app as the business grows. Whatever you choose, use one method, not three.

What bookkeeping mistakes should I avoid?

Recording sales but not expenses.
Writing a whole week of records from memory on Sunday.
Ignoring small costs. ₦700 a day adds up to ₦21,000 in a 30-day month.
Selling on credit without writing it down, then forgetting which customer dey owe.
Never counting stock, so you cannot spot losses or theft.
Throwing away supplier receipts.
Keeping only one copy. Photograph your notebook pages every week.

How KudiAI Track helps

KudiAI Track keeps your sales, expenses, stock and customer debts in one place on your phone. You can record by tap or by voice in English, Pidgin, Hausa, Igbo or Yoruba. Records you make offline sync when you are back online. Every receipt carries a QR code anyone can check at kudiai.app/verify. The Starter plan is free for up to 50 transactions a month.

Questions people ask

How long should I keep my business records in Nigeria?

The Nigeria Tax Administration Act 2025 says at least six years after the year of assessment the income relates to. Store paper receipts by month and keep photos as a backup.

Can I keep my records in Hausa, Igbo or Yoruba?

You can write daily notes in any language you understand well. The law asks for books in English, so the tax office can request a certified English translation at your own cost.

Do I need an accountant for a small business?

Not for daily records, which you can keep yourself. An accountant is most useful once a year, when you prepare your statement of accounts and tax return.

What record should I start with?

Start with daily sales and expenses. When that becomes a habit, add your debt list and a weekly stock count.