What does the Business Mileage Log Calculator do?

Log business trips with dates and mileage. Calculate HMRC mileage allowance claim automatically. All calculations are performed in your browser using official UK rates and thresholds.

Is this suitable for my business?

This calculator provides general estimates based on standard UK business rates and rules. Every business is different — consult your accountant for advice specific to your circumstances.

Does this use 2025/26 tax rates?

Yes. All rates and thresholds are based on the current 2025/26 UK tax year. Corporation Tax main rate is 25% for profits over £250,000, with a 19% small profits rate.

Business Mileage Log Calculator

Log business trips with dates and mileage. Calculate HMRC mileage allowance claim automatically.

Last updated: April 2026 · Source: GOV.UK – Business Travel Mileage

Mileage Log

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Total Miles

HMRC Claim

£36.00

Trips Logged

Keep a log of all business trips for tax purposes. HMRC rates: 45p/mile first 10,000 miles, 25p thereafter. Don't include commuting (home to regular workplace).

Disclaimer

This calculator is provided for informational purposes only and should not be considered as financial or tax advice. All calculations are performed locally in your browser — no personal data is collected or sent to our servers. Rates and thresholds are sourced from HMRC and GOV.UK and are updated for the current tax year. Always verify results with HMRC or consult a qualified professional before making financial decisions.

How It Works

HMRC's approved mileage allowance payment (AMAP) rates let you claim 45p per mile for the first 10,000 business miles in a tax year and 25p per mile thereafter when using your own car. Motorcycles attract 24p per mile and bicycles 20p per mile with no threshold. Each journey must be logged with the date, start and end locations, purpose, and miles driven to satisfy HMRC record-keeping requirements.

Only journeys with a genuine business purpose qualify—visiting clients, travelling between work sites, collecting supplies, or attending business meetings. Ordinary commuting between home and a permanent workplace does not count. If you work from home as your main base and travel to a client site, that journey qualifies. HMRC may request your mileage log during an enquiry, so contemporaneous records kept throughout the year are essential.

For employees, if your employer pays less than the AMAP rate, you can claim Mileage Allowance Relief (MAR) on the shortfall via your Self Assessment return or form P87. For self-employed sole traders, you choose between AMAP simplified expenses or actual vehicle costs—but once chosen, you must stick with that method for the life of the vehicle.

Annual mileage claim for a self-employed consultant

Total business miles driven in the tax year: 14,000.
First 10,000 miles at 45p: 10,000 × £0.45 = £4,500.
Remaining 4,000 miles at 25p: 4,000 × £0.25 = £1,000.
Total mileage allowance: £4,500 + £1,000 = £5,500.
At the 20% basic tax rate, this reduces your tax bill by £1,100.

Source: GOV.UK – Business Travel Mileage

Frequently Asked Questions

What does the Business Mileage Log Calculator do?: Log business trips with dates and mileage. Calculate HMRC mileage allowance claim automatically. All calculations are performed in your browser using official UK rates and thresholds.
Is this suitable for my business?: This calculator provides general estimates based on standard UK business rates and rules. Every business is different — consult your accountant for advice specific to your circumstances.
Does this use 2025/26 tax rates?: Yes. All rates and thresholds are based on the current 2025/26 UK tax year. Corporation Tax main rate is 25% for profits over £250,000, with a 19% small profits rate.