UK Tax Rates API: free JSON & CSV for 2026-27

Quick start

All 2026-27 rates in one file: https://tidysheets-uk.pages.dev/api/v1/2026-27.json
Catalogue of every endpoint: https://tidysheets-uk.pages.dev/api/v1/index.json
Spreadsheet (CSV): https://tidysheets-uk.pages.dev/api/csv/v1/2026-27.csv

curl

curl -s https://tidysheets-uk.pages.dev/api/v1/2026-27/income-tax.json

JavaScript (fetch)

const r = await fetch("https://tidysheets-uk.pages.dev/api/v1/2026-27.json");
const rates = await r.json();
console.log(rates.income_tax.personal_allowance);      // 12570
console.log(rates.dividends.rates.basic);              // 0.1075
console.log(rates.mileage.cars_and_goods_vehicles.rate_first_miles); // 0.55

Google Sheets

=IMPORTDATA("https://tidysheets-uk.pages.dev/api/csv/v1/2026-27.csv")

The CSV has one row per figure: tax_year, topic, key, value, source_url. To pull a single value, e.g. the Personal Allowance: =VLOOKUP("personal_allowance", QUERY(IMPORTDATA("https://tidysheets-uk.pages.dev/api/csv/v1/2026-27.csv"), "select C, D"), 2, FALSE). Excel users can use Data > From Web with the same URL.

Endpoints

Path	Format	What's in it
/api/v1/index.json	JSON	This catalogue
/api/v1/2026-27.json	JSON	All 2026-27 rates in one file
/api/v1/2026-27/income-tax.json	JSON	2026-27 income tax
/api/v1/2026-27/national-insurance.json	JSON	2026-27 national insurance
/api/v1/2026-27/student-loans.json	JSON	2026-27 student loans
/api/v1/2026-27/dividends.json	JSON	2026-27 dividends
/api/v1/2026-27/mileage.json	JSON	2026-27 mileage
/api/v1/2026-27/vat.json	JSON	2026-27 vat
/api/v1/2026-27/allowances.json	JSON	2026-27 allowances
/api/csv/v1/2026-27.csv	CSV	All 2026-27 rates as CSV (Google Sheets IMPORTDATA friendly)
/api/v1/2025-26.json	JSON	All 2025-26 rates in one file
/api/v1/2025-26/income-tax.json	JSON	2025-26 income tax
/api/v1/2025-26/national-insurance.json	JSON	2025-26 national insurance
/api/v1/2025-26/student-loans.json	JSON	2025-26 student loans
/api/v1/2025-26/dividends.json	JSON	2025-26 dividends
/api/v1/2025-26/mileage.json	JSON	2025-26 mileage
/api/v1/2025-26/vat.json	JSON	2025-26 vat
/api/csv/v1/2025-26.csv	CSV	All 2025-26 rates as CSV (Google Sheets IMPORTDATA friendly)
/api/v1/deadlines.json	JSON	UK tax and money deadlines (29 dates)
/api/csv/v1/deadlines.csv	CSV	Deadlines as CSV

Paths under /api/v1/ are stable: field names won't change, though new fields and tax years may be added. Every JSON file includes tax_year, source_urls (GOV.UK), last_verified, licence and disclaimer. Files are cached for an hour.

What the 2026-27 figures say

• Income Tax (England, Wales, NI): Personal Allowance £12,570, reduced by £1 for every £2 over £100,000 (gone at £125,140); basic rate 20% on the first £37,700 of taxable income, higher rate 40% up to £125,140, additional rate 45% above.
• National Insurance (employee, category A): 8% between £12,570 and £50,270 a year, 2% above. Employer: 15% over £5,000.
• Student loans: 9% over the threshold: Plan 1 £26,900, Plan 2 £29,385, Plan 4 £33,795, Plan 5 £25,000; Postgraduate Loan 6% over £21,000.
• Dividends: £500 allowance, then 10.75% basic, 35.75% higher, 39.35% additional (2025-26: 8.75%, 33.75%, 39.35%).
• Mileage (self-employed simplified expenses): cars and vans 55p a mile for the first 10,000 business miles (45p in 2025-26), then 25p; motorcycles 24p.
• Trading allowance: £1,000.
• VAT: standard rate 20%, reduced rate 5%, zero rate 0% (VAT fractions 1/6 and 1/21); register if taxable turnover in the last 12 months is more than £90,000 or you expect more than that in the next 30 days alone; you can ask to cancel below £88,000. Try it in the VAT calculator.

Field reference

• income_tax.personal_allowance, personal_allowance_taper.income_limit, .allowance_zero_at: pounds a year.
• income_tax.bands[]: name, rate (decimal, 0.2 = 20%), taxable_from/taxable_to (taxable income after the Personal Allowance; null = no upper limit), income_from/income_to (gross income with the standard allowance).
• national_insurance.employee_class1_category_a: primary_threshold_annual, upper_earnings_limit_annual, main_rate, rate_above_uel. employer_class1: secondary_threshold_annual, rate.
• student_loans.rate, plans.plan_1|plan_2|plan_4|plan_5.annual_threshold, postgraduate_loan.rate|annual_threshold. 2025-26 has no Plan 5 (none listed on GOV.UK).
• dividends.dividend_allowance, dividends.rates.basic|higher|additional.
• mileage.cars_and_goods_vehicles.first_miles|rate_first_miles|rate_after, mileage.motorcycles.rate: pounds per business mile.
• allowances.trading_allowance (2026-27 file).
• vat.rates.standard|reduced|zero (decimals), vat.vat_fractions.standard|reduced (for taking VAT out of a VAT-inclusive price), vat.registration_threshold, vat.deregistration_threshold, vat.forward_look_days, vat.threshold_basis, vat.deadline_rules, vat.threshold_period. VAT thresholds run from 1 April, not 6 April.
• deadlines[] in deadlines.json: date (YYYY-MM-DD), title, description, who, tax_year_of_date, slug, source_urls. Same dates as our tax deadlines calendar.

Not included (yet): Scottish Income Tax bands, Class 2/4 National Insurance, savings allowances, Capital Gains Tax, VAT schemes (Flat Rate etc.) and pension allowances. We only publish figures we've checked on GOV.UK and use in our own tools.

Licence and attribution

Free to use, including in commercial apps, spreadsheets and articles. All we ask is a credit link, for example:

<a href="https://tidysheets-uk.pages.dev/uk-tax-rates-api">UK tax rates from Tidy Sheets</a>

Please link to this page rather than hot-linking only the JSON, so readers can find the sources and updates. Underlying rates are published by HMRC on GOV.UK.

Use the calculators instead

Not a developer? The same figures power our free tools: take-home pay calculator, salary after tax tables, dividend tax calculator, HMRC mileage allowance calculator, £1,000 trading allowance calculator, the VAT calculator and £90,000 threshold checker and the UK tax deadlines calendar. You can also embed the calculators on your site.

Disclaimer and sources

General information only, not tax or financial advice. Figures were checked against GOV.UK on the last_verified date; always check GOV.UK for your own situation. Income Tax bands are for England, Wales and Northern Ireland (Scotland has its own bands for non-savings, non-dividend income). Last verified: 17 October 2026. If you spot a change on GOV.UK before we do, the email is tidysheets@mail.grokbot.com.

gov.uk/government/publications/rates-and-allowances-income-tax/income-tax-rates-and-allowances-current-and-past
gov.uk/government/publications/rates-and-allowances-national-insurance-contributions
gov.uk/government/publications/vat-notice-7001-should-i-be-registered-for-vat/vat-notice-7001-should-i-be-registered-for-vat
gov.uk/government/publications/vat-notice-7001-should-i-be-registered-for-vat/vat-notice-7001-supplement--2
gov.uk/guidance/rates-and-thresholds-for-employers-2025-to-2026
gov.uk/guidance/rates-and-thresholds-for-employers-2026-to-2027
gov.uk/guidance/tax-free-allowances-on-property-and-trading-income
gov.uk/guidance/vat-guide-notice-700
gov.uk/hmrc-internal-manuals/business-income-manual/bim75005
gov.uk/how-vat-works/vat-thresholds
gov.uk/income-tax-rates
gov.uk/national-insurance-rates-letters
gov.uk/national-insurance/how-much-you-pay
gov.uk/register-for-vat
gov.uk/repaying-your-student-loan/what-you-pay
gov.uk/simpler-income-tax-simplified-expenses/vehicles
gov.uk/tax-on-dividends
gov.uk/vat-rates