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Resources · Google Sheets · UK tax year 2026/27

UK Self-Employed Tax Tracker: no more January surprises

Turn your income, expenses and mileage into a live tax estimate. It tells you exactly how much to set aside each month and shows every HMRC payment date and amount.

  • Income tax, Class 4 NI and student loan, including Scottish rates
  • Side hustle alongside a job? It works out only the extra tax
  • Picks expenses or the £1,000 trading allowance, whichever saves more
  • Designed by a Chartered Accountant
Get the tracker · £19.99One-off payment · Instant access
UK Self-Employed Tax Tracker dashboard in Google Sheets on a laptop

Dashboard

What to save each month, worked out for you

Your profit so far, tax so far, the projected bill for the year and a tax pot that shows how much to put aside each month until the 31 January deadline.

Dashboard cards and tax pot showing how much to save each month

Payment dates

Payments on account, explained and included

Every HMRC payment date and amount, including the balancing payment and payments on account, so your first January bill isn't a shock.

Table of HMRC payment dates and amounts including payments on account

Tax estimate

Your full tax bill, so far and for the year

Income tax (including Scottish bands), Class 4 and voluntary Class 2 National Insurance, and student loan repayments, with a full-year projection based on your income so far.

Tax estimate breakdown of income tax, Class 4 NI and student loan

Income & expenses

Log it once, categorised the HMRC way

15 HMRC-matched expense categories, a business-use % for things you also use personally, refunds handled, and a check on every row that flags mistakes in plain words.

Income and expense logs with categories and business-use percentage

Mileage & home

Mileage and working from home at HMRC rates

Log journeys at 55p a mile and your monthly working-from-home hours at the flat rate. The tracker does the maths and adds them to your expenses.

Mileage log at HMRC rates and working from home hours

Tax return

Your figures, ready for Self Assessment

Turnover, allowable expenses and profit laid out under the headings on the self-employment pages of your tax return, so filing takes minutes.

Tax Return Summary under the SA103 self-employment headings

What's inside

7 connected tabs. Log as you go and the Dashboard keeps itself up to date.

Start Here

Set up

Your details, a 3-step guide and 15 real-life situations

Income

Log

Every payment you receive, with refunds handled

Expenses

Log

15 HMRC categories and business-use %

Mileage & Home

Log

HMRC mileage rates and the working-from-home flat rate

Dashboard

See

What to save, payment dates, tax estimate and a chart

Tax Return Summary

See

Your figures under the SA103 headings

Tax Settings

Tools

2026/27 UK rates, easy to update each April

Built for real life

Handles the situations you'll actually face

Plain-English guidance for 15 situations, built into the Start Here tab, plus automatic alerts on the Dashboard. Here are some of them.

  • A side hustle alongside a job
  • Earning under £1,000 a year
  • Selling on Etsy, eBay, Vinted or Depop
  • Things used for work and personal life
  • Driving for work
  • Working from home
  • Buying equipment
  • Your first year in Self Assessment
  • Already paying payments on account
  • Making Tax Digital
  • Living in Scotland
  • Higher earners
  • Starting a new tax year

Covers sole traders on the cash basis. Not for limited companies, partnerships or rental income. It is not Making Tax Digital software and does not send anything to HMRC.

How it works

1

Make your copy

After payment, click "Make a copy" to save the tracker to your Google Drive.

2

Add your details

Fill in Start Here, including your salary if you also have a job.

3

Log as you go

Add income, expenses and journeys, then check what to save each month.

UK Self-Employed Tax Tracker

£19.99

One-off payment. No subscription.

  • The full UK Self-Employed Tax Tracker for Google Sheets
  • 7 connected tabs, with a filled-in example version and a blank version
  • Instant access straight after payment
  • Free updates for every new tax year
  • Email help if you get stuck setting up
Get the tracker · £19.99

Secure checkout by Stripe · Google Sheets

Want a Chartered Accountant to look over it with you?

Book a one-to-one review call and we'll go through your figures together and agree your next steps.

Book a review call

Frequently asked questions

How do I get the tracker after I pay?

You're taken straight to a download page with your "Make a copy" links. One click saves the tracker to your own Google Drive. Stripe also emails your receipt.

I have a job as well. Does it work for me?

Yes. Enter your salary and it works out only the extra tax your side income adds, using your remaining allowances and bands.

Is it Making Tax Digital software?

No. It doesn't connect to or send anything to HMRC. It warns you if your income is heading over the Making Tax Digital thresholds.

Does it work in Excel?

The download here is the Google Sheets version, which is free with any Google account. If you'd rather use Excel, get in touch after buying and I'll send you the Excel files too.

Do I need to connect my bank?

No. There is no app, no subscription and no bank login. Your copy lives in your own Google Drive and only you can see it.

Will I get updates when tax rates change?

Yes. Bookmark your download page: it always links to the latest version, updated for each new tax year at no extra cost.

Can I share it with friends?

Please don't share or resell the tracker or its links. It is licensed for your own personal use.

Is this tax advice?

No. The tracker is a planning tool, not regulated tax advice. Figures are estimates based on what you enter.

Ready to stop dreading January?

Get the UK Self-Employed Tax Tracker today and know exactly what to put aside, every month.

Get the tracker · £19.99