A 20-minute weekly bookkeeping routine for a one-person business

Most small-business bookkeeping problems are not difficult. They are late. Receipts pile up, bank lines go unexplained, and three months later nobody remembers what a payment was for. A short session every week prevents nearly all of it.

This is general education, not tax or legal advice. Rules differ by country, so check what your own tax authority requires.

The principle: every entry has two sides

Money never simply appears or disappears. When a customer pays you, your bank balance goes up and the amount they owe you goes down. When you buy supplies, your bank balance goes down and your costs go up. Keeping both sides in view is what makes mistakes visible.

The weekly routine

Set a fixed time, the same day each week, and work through these four steps.

• Record: enter every sale and every expense from the past week, each with its date, amount, and a few words saying what it was.
• Match: compare your records with the bank statement line by line, and explain anything that does not match.
• Check: see who owes you money, and send a polite reminder for anything overdue.
• Look ahead: list the bills due in the next four weeks and compare them with what is in the bank.

A small worked example

Suppose, hypothetically, you start the week with 1,000 in the bank. You receive 400 from a customer and pay 150 for materials. Your records show both entries, and your bank should show 1,250. If the bank says 1,240, something is unexplained: perhaps a 10 bank fee you did not record. Finding that now takes one minute; finding it at year end can take an afternoon.

Keep the evidence

Photograph or save every receipt and invoice the day it arrives, in one folder named by month. When the routine says record, the evidence is already waiting.

Why it works

Twenty minutes a week is about seventeen hours a year, spread so thinly you barely notice it. The alternative is usually a stressful weekend before a deadline, plus the cost of mistakes nobody caught in time. The habit matters more than the software you use.