What Simple Records a New Sole Trader Can Keep: A Practical UK Guide

By ADMIN

On November 5, 2026

At 4:09 am

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What simple records a new sole trader can keep

As a new UK sole trader, the simple records you need to keep are a log of all business income (sales invoices, bank statements and cash sales) and a record of all business expenses (receipts, statements, mileage logs and utility bills if you work from home). You do not send these to HMRC when you file, but you must keep them available in case HMRC asks to check them, according to Sole Trader Toolkit.

The good news is that you do not need expensive software to stay compliant. A tidy spreadsheet plus a folder of receipts can be enough, especially in your first year when money is tight and every pound counts.

Key takeaways

Record keeping is a legal duty, not a preference. Section 12B of the Taxes Management Act 1970 requires every self-employed person to keep records that support a correct and complete Self Assessment return (Business Forever).
The basics are simple: every sale, every expense, and the bank statements behind them.
You keep records from day one. The duty starts when trading starts, not when the first filing deadline appears (UK Tax Toolbox).
A spreadsheet and a folder of receipts satisfy the test if another informed person could follow the evidence from customer payment to annual total without relying on your memory.
Keep records even if you earn very little, because gross income (not profit) determines whether the £1,000 trading allowance has been crossed.

Why bother with records before tax is even due?

It is tempting to think record keeping can wait until the return is due. It cannot, and it would not help you much anyway. Records do far more than support a tax calculation. They help you tell the difference between turnover and bank deposits, spot unpaid invoices, work out which of your services actually make money, and explain a figure if HMRC asks how you reached it.

Records also matter outside of tax. They can support a loss claim, a decision about voluntary National Insurance contributions, a mortgage application, or a later correction to your return. HMRC does not normally require you to upload every receipt with an online return, but you must keep enough evidence to make a complete and accurate return (UK Tax Toolbox).

There is also a practical cost to getting it wrong. Poor record keeping is one of the most common reasons sole traders face HMRC penalties, disallowed expenses, or a stressful compliance check they cannot easily defend (Business Forever). On a tiny budget, a penalty is exactly the kind of expense you cannot absorb.

Income records: what to keep for every sale

HMRC requires sole traders to keep records of all business income. In practice, that means (Sole Trader Toolkit):

Sales invoices: keep a copy of every invoice you issue, for every piece of work or product sold.
Bank statements: showing money received into your business account.
A cash sales log: a simple record of any cash payments received, even if you never issue a formal invoice.
Any other evidence of what you earned and when, such as payment platform summaries.

The cash sales log is the one new traders most often skip, and it is the one that causes the most trouble later. If a customer pays cash and you have no record of it, it becomes much harder to explain how a figure in your annual total was reached, which is exactly the sort of situation HMRC expects you to be able to evidence.

Separate business money from personal money

You are not legally required to have a dedicated business bank account as a sole trader, but keeping business money separate makes everything else easier. It turns your bank statement into a ready-made income record and stops you guessing which deposits were sales and which were your own money. Records of money you introduce into the business should also be kept, along with records of the sale and purchase of business assets (LegalVision UK).

Expense records: what to keep for every claim

For every business expense you claim, keep the receipt or proof of payment. The essentials are (Sole Trader Toolkit):

Bank and credit card statements showing business purchases.
Receipts for equipment, phone bills and other running costs.
A mileage log recording the date, destination, purpose and miles for each business journey.
Utility bills, if you are claiming a proportion for working from home using the actual costs method.

The mileage log deserves a special mention because it cannot be reconstructed later. You cannot accurately recreate six months of journeys from memory, so log each trip when it happens, even if that just means a note on your phone.

Records that apply in specific situations

Some records only become relevant as your business grows, but it helps to know they exist (UK Tax Toolbox):

Stock and work-in-progress records, where relevant.
VAT records, if you register for VAT.
PAYE and National Insurance details for employees, if you take anyone on (LegalVision UK).

If none of these apply to you yet, ignore them for now. The core income and expense records above are what matter in your first year.

How long do you need to keep records?

If your income is higher, check Making Tax Digital for Income Tax. It applies to sole traders with qualifying income over £50,000 from April 2026, over £30,000 from April 2027 and over £20,000 from April 2028, and it means keeping digital records.

GOV.UK says to keep records for at least 5 years after the 31 January submission deadline of the relevant tax year, and for longer if you send a return very late (Sole Trader Toolkit). HMRC can also ask to see records at any point, not just during an active enquiry (Business Forever).

That might sound like a lot of paperwork to hold onto, but digital copies solve the storage problem. Photographing receipts and filing them in clearly named folders, one per tax year, costs nothing and keeps everything searchable.

What simple records a new sole trader can keep without spending money

This is where the “poor entrepreneur” approach shines. You do not need a paid subscription in year one. The useful test, as UK Tax Toolbox puts it, is whether another informed person could follow the evidence from customer payment to annual total without relying on your memory. A tidy spreadsheet with source documents can satisfy that aim more effectively than an expensive system used inconsistently (UK Tax Toolbox).

A free setup that works for most new sole traders:

A spreadsheet with one sheet for income and one for expenses, with columns for date, description, amount and reference number.
A dedicated folder (physical or digital) for receipts, organised by month.
A business bank account or a clearly ring-fenced personal account, so statements are easy to read.
A simple mileage log, whether that is a notebook or a note-taking app.

The tool matters less than the habit behind it: good record keeping makes completing your Self Assessment return much faster, because an accurate set of records is largely a matter of pulling the numbers together, while reconstructing a year from memory is slow and error-prone. If you want a framework for building that habit, our guide to a simple daily money routine for new entrepreneurs on a budget pairs well with this one.

What happens if your records are not good enough?

Under the Taxes Management Act 1970, every self-employed person in the UK has a legal duty to keep records that support the figures on their Self Assessment return. This applies whether you use an accountant or file yourself, and whether you are earning £2,000 a year or £200,000 (Business Forever).

If HMRC finds your records inadequate during a compliance check, the possible consequences include penalties and disallowed expenses, meaning you lose the tax reduction those expenses would have given you. If something goes missing, reconstruct what you can from bank statements and supplier emails, and be honest about the gaps rather than inventing figures.

Does the £1,000 trading allowance change anything?

Even if your income is small, records still matter. Whether the £1,000 trading allowance level has been crossed is determined by gross income rather than profit, so you need to know your gross income to make that call (UK Tax Toolbox). Keeping records also positions you for claiming expenses properly once you outgrow the allowance. For more on keeping what you earn legitimately, see our guide to tax-efficient wealth building.

FAQ

Do I have to send my records to HMRC?

No. You do not send your records when you file your Self Assessment return. You keep them yourself and make them available if HMRC opens an enquiry or asks to see them (Sole Trader Toolkit).

Can I use a spreadsheet instead of accounting software?

Yes. A tidy spreadsheet with source documents can satisfy the aim of record keeping more effectively than an expensive system used inconsistently. The test is whether someone else could follow the evidence from payment to annual total (UK Tax Toolbox).

Do I need to keep receipts for small purchases?

For every business expense you claim, keep the receipt or proof of payment. Bank or credit card statements showing the purchase can also serve as supporting evidence (Sole Trader Toolkit).

What if I only earn a few hundred pounds?

Keep records anyway. Gross income, not profit, determines whether the £1,000 trading allowance has been crossed, and records also support loss claims, voluntary National Insurance decisions and mortgage applications (UK Tax Toolbox).

Do I need a separate business bank account?

It is not a legal requirement for sole traders, but separating business money makes your statements a ready-made income record and saves hours of untangling at year end.

The takeaway

The simple records a new sole trader needs come down to three habits: log every sale, keep the receipt for every expense, and keep business money in a place you can trace. None of it costs money, all of it can be done with a spreadsheet and a folder, and starting from day one makes it far easier to defend your figures if HMRC ever checks them. A sensible first step is to set up a simple spreadsheet now and get into the routine of logging sales and expenses as you go.

Sources

record keeping, self assessment, small business, sole trader, UK tax