Bookkeeping that holds up: what you actually need to keep

Most freelancers either overbuild this — subscribing to accounting software they use twice a year — or underbuild it so badly that April becomes a week of forensic archaeology.

The actual requirement is narrower than either. You need records that let you produce an accurate return and defend it if asked. That is it.

The one thing that matters most

A separate bank account for the business.

If you do only one thing from this guide, do this. It is free, it takes twenty minutes, and it does more for your bookkeeping than any software.

With separated accounts, your business statement is your ledger. Categorising a year of transactions is an afternoon. With mixed accounts, every line needs a judgement call about whether it was business or personal, twelve months after you have forgotten.

A separate card for business spending is the natural companion. It does not need to be a business card — a second personal card used only for business works fine and often has better terms.

For an LLC this stops being merely convenient and becomes important: mixing funds is one of the things that can undermine your liability protection.

What the IRS actually requires

There is no prescribed format. No mandated software, no particular ledger. The requirement is that your records support the figures on your return.

In practice that means, for each business transaction: the amount, the date, and the business purpose.

For deductions you generally need a receipt for expenses of $75 or more, though keeping everything is easier than remembering the threshold. Lodging requires a receipt at any amount.

Some categories have stricter substantiation rules — travel, meals, gifts, and vehicle use. For these, the business purpose must be documented, not merely implied by the amount.

Keep it for three years, sometimes longer

The general rule is three years from filing.

But: six years if you understated income by more than 25%, and indefinitely if you did not file or filed fraudulently.

Two categories to keep longer regardless:

• Asset records — anything you depreciate. Keep for the life of the asset plus three years, because you need the basis when you sell or dispose of it.
• Home office records if you own the home, because depreciation claimed is recaptured when you sell.

Digital copies are acceptable. A photo of a receipt in a dated folder is a valid record — you do not need to keep the paper.

A system that works without software

For a solo freelancer with straightforward finances:

1. Separate bank account and card. All business money moves through them.
2. A photo of every receipt, into a cloud folder organised by year and month. Take it at the point of sale; a receipt in a pocket becomes a lost receipt.
3. A spreadsheet with one row per transaction — date, amount, who, category, note. Update it monthly, not annually. Half an hour a month.
4. A mileage app, if you drive for work. Note that 2026 needs a dated log because the rate changed mid-year: 72.5¢ before July 1, 76¢ after.
5. Copies of invoices sent, and a note of which have been paid.

That is a complete, defensible system. It costs nothing beyond a cloud folder.

Accounting software becomes genuinely worthwhile when you have inventory, employees, multiple revenue streams, an S-corp election, or enough transaction volume that manual entry stops being realistic. Below that it is mostly convenience.

Categories worth splitting from the start

Use categories that map onto Schedule C lines, because that is where the numbers end up:

advertising · car and truck · contract labour · depreciable equipment · insurance (business, not health) · legal and professional · office expense · rent or lease · supplies · travel · meals, kept separate because they are limited to 50% · utilities · software and subscriptions · bank and payment processing fees · home office

Keeping meals separate from travel matters — mixing them means recalculating at year end.

The reconciliation habit

Once a month, sit down and:

• Match every business transaction to a category
• Chase anything unpaid
• Move your tax set-aside across if you have not been doing it per payment
• Note anything unusual while you still remember what it was

That last one is the real value. A $340 payment to a name you do not recognise is identifiable in February and a mystery in April.

Half an hour a month replaces a very unpleasant week.

What actually causes problems

Not sloppy categorisation. These:

Mixed personal and business accounts. The single biggest cause of both bad records and lost deductions.

No documentation for the strict categories. Travel, meals, gifts and vehicle use need a business purpose recorded, not just an amount.

Round numbers everywhere. A return where every expense is a suspiciously neat figure suggests estimation rather than records.

Deductions with no plausible relationship to the business. The test is ordinary and necessary for your trade. Ordinary means common in your field; necessary means helpful and appropriate.

Claiming a loss year after year. A business that never profits starts to resemble a hobby. The rough guideline is profit in three of five years.

Reconstructing a year you did not track

If you are reading this in April with no records, it is recoverable — imperfectly.

Bank and card statements give you most of the transactions. Email gives you invoices, receipts and confirmations. Your calendar establishes travel and client meetings. Your phone’s location history, if enabled, can support mileage.

Reconstructed records are legitimate but weaker than contemporaneous ones, particularly for mileage and meals where the rules specifically expect records made at the time.

Do it, file accurately — and then open the separate account, because the second year is entirely within your control.

The point of all this

Good records are not about compliance for its own sake. They are how you find the deductions you are entitled to, and every deduction reduces net profit, which reduces both self-employment tax and income tax — a combined saving frequently over 35%.

Once you know your real profit, the calculator below shows what it costs.