How to Do Bookkeeping for Your Own Small Business: The Monthly Minimum
Updated: Oct 9
The least bookkeeping you need to do for your own business is three things, once a month: get every transaction into one place, give each one a label, and read the totals.
Not a course. Not an accounting qualification. Not last year fixed first. This month, done properly, and then next month done the same way.
This is for the woman who is the whole business: the one who does the work, sends the invoices and is also, somewhere in the evening, supposed to do the books.
If you are setting up from nothing, start with how to do your own bookkeeping. This post is the monthly routine once you have.
The categorization screen in the Money Mastery System. Example data.
The short version
Bookkeeping is three jobs: record, label, read.
The IRS asks for a system that clearly shows your income and expenses. It does not name a program or a method.
Transfers and credit card payments are the two labels that keep your totals honest.
One two hour sitting a month, or about twenty minutes a week, is enough when it happens every month.
What does the IRS expect you to keep?
Less than most people fear. The IRS says you may choose any recordkeeping system suited to your business that clearly shows your income and expenses.
What it does ask for is a record of six kinds of thing.
What | What backs it up |
|---|---|
What came in (gross receipts) | Deposit information |
What you bought to resell | Invoices, canceled checks |
What it cost to run the business | Account and credit card statements |
Travel, transportation and gifts | Their own proof rules, set out in IRS Publication 463 |
What the business owns | Purchase invoices |
Employment taxes, if you have employees | Employment records, kept at least four years |
A one-person service business usually lives in the first, third and fifth rows. That is the whole standard: clear totals, with the statement or receipt behind each one.
The three jobs
Every bookkeeping system, from a shoebox to a firm of accountants, does the same three jobs. The only difference is how long each takes.
Record. Bring the month's bank and card statements into one place. In the Money Mastery System you upload the statement yourself, and nothing connects to your bank.
Label. Give each transaction a category, so a line reading "SQ *4471" becomes "Supplies" or "Client income".
Read. Look at what the labelled month adds up to.
Most of the time goes on the second job. It is also the one that gets quicker every month, because the labels you chose before come back as suggestions.
The two labels that matter most
Transfers and credit card payments. They are the two places where a careful person's numbers go wrong without anyone noticing.
Move $2,000 from savings to checking and your checking statement shows $2,000 arriving. It was not earned. Pay $900 to your credit card and your statement shows $900 leaving. It is not a new expense, because the purchases on that card were counted when you made them.
Mark both for what they are, and your income is what you earned, your expenses are what you spent, and each is counted once.
What the two hours looks like
Step | What you do | About |
|---|---|---|
Gather | Download last month's statements for every account and card | 15 minutes |
Record | Upload them, and check each ending balance matches | 15 minutes |
Label | Give every transaction a category; mark transfers and card payments | 60 minutes |
Read | Income, expenses, profit, and two questions | 20 minutes |
Note | Write one line about the month, for yourself in April | 10 minutes |
The two questions are these. Is profit higher or lower than last month, and do you know why? Did any category surprise you? If you can answer both, you have done what bookkeeping is for.
Your first month takes longer, because you are choosing categories for the first time. By the third, most of the labels are suggested for you.
A month sorted and summed in the All Transactions report. Example data.
What about receipts?
A statement shows that you paid $84 to an office supply shop. It does not show what you bought. The receipt does, which is why the IRS talks about the supporting documents behind each total, not only the totals.
You do not need a filing cabinet. Photograph the receipt when you get it and attach it to the transaction when you label the month. Keep receipts for anything large, anything that could be read as personal, and anything to do with travel or gifts.
What can wait
Old years, perfect categories and anything you would only do "when there is time". Start with the month you are in. Go backwards only when a real deadline asks you to.
Fifteen categories are enough for most service businesses, and you can rename one later without losing anything. A category list you use beats a better one you are still designing.
What changes after three months
You stop guessing. You know what a normal month costs to run, so you can tell a slow month from a worrying one. You know roughly what you will owe in tax, because you have a profit figure to work from. And the conversation with your accountant gets shorter, because you arrive with totals and not a folder.
Start with where you stand, free
Before the monthly routine, most people need the bigger picture: what they own and what they owe. That is what La Soglia, the free membership of the Money Mastery System, is for. Everything in one place, personal and business together, with no bank connection and no card.
The monthly routine in this post, the upload, the labels and the reports, is the paid membership, and Clarity remembers how you sorted something last time so the second month is faster than the first.
Bring it to the Collective
Which categories to use is a first-month question, and other owners are often the best people to ask. The Money Mastery Collective has a discussion feed open on the free membership.
Questions we hear
Do I need software to do my own bookkeeping?
No. The IRS standard is a system that clearly shows your income and expenses, and a notebook can meet it. What software changes is the time each month takes.
How long does it take each month?
About two hours once your categories are set, or twenty minutes a week. The first month is slower because you are choosing categories for the first time.
What if I am months behind?
Start with this month so the pile stops growing. Then go back one month at a time, and only as far as a real deadline needs.
Do I still need an accountant?
Bookkeeping records and sorts. An accountant interprets and files. Clean records make their work faster and usually cheaper.
References
The recordkeeping standard and the six kinds of record are from the IRS page What kind of records should I keep, read on 6 October 2026, and IRS Publication 583, Starting a Business and Keeping Records.
Related guides: How to do your own bookkeeping, step by step · Home based business bookkeeping: a one-page checklist · Where does my money go? A simple money tracker.
Start free with La Soglia
La Soglia is the free membership of the Money Mastery System. It gives you the Net Worth Tracker, where everything you own and everything you owe sits in one place, and the Money Mastery Collective. There is no card to enter and no bank connection.
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A note on what this is
This article is educational. The Money Mastery System is an educational tool, not financial software, and nothing here is legal, tax, investment or financial advice. Record requirements depend on your entity, your sector and your state. For guidance on your own circumstances, please speak with a qualified professional who knows them.
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