API documentation

View documentation for our RESTful and XML APIs here on the Developer Hub.

Example Hello World REST API
Agents Agent Authorisation Online XML API
Charities Charities Online XML API
Construction Industry Scheme Construction Industry Scheme Online XML API
Corporation Tax Corporation Tax Online XML API
Customs Bulk Data File List REST API
Customs Declarations REST API
Customs Inventory Linking Exports REST API
Pull Notifications REST API
Create Test User Test Support API
Alcohol and Tobacco Warehouse Declaration Online XML API
Excise Movement Control System XML API
Exchange rates from HMRC XML API
Import Control System XML API
National Export System XML API
New Computerised Transit System XML API
VAT and EC Sales List Online XML API
Estates Estate Registration Service REST API
Income Tax (Making Tax Digital) Income Tax (MTD) end-to-end service guide Service Guide
Self Assessment (MTD) REST API
Create Test User Test Support API
Lifetime ISA Lifetime ISA REST API
Create Test User Test Support API
National Insurance National Insurance REST API
Create Test User Test Support API
National Insurance Test Support Test Support API
PAYE Individual PAYE REST API
Marriage Allowance REST API
Create Test User Test Support API
Individual PAYE Test Support Test Support API
Marriage Allowance Test Support Test Support API
Employment intermediaries XML API
PAYE Online XML API
Real Time Information online XML API
Pensions Pension Schemes Online XML API
Relief at Source Relief At Source REST API
Self Assessment Individual Benefits REST API
Individual Employment REST API
Individual Income REST API
Individual PAYE REST API
Individual Tax REST API
Marriage Allowance REST API
National Insurance REST API
Create Test User Test Support API
Individual PAYE Test Support Test Support API
Marriage Allowance Test Support Test Support API
National Insurance Test Support Test Support API
Self Assessment Online XML API
Stamp Duty Stamp Taxes Online XML API
Trusts Trust Registration Service REST API
VAT (Making Tax Digital) VAT (MTD) end-to-end service guide Service Guide
VAT (MTD) REST API
Create Test User Test Support API
VAT (XML) VAT and EC Sales List Online XML API
Other Automatic Exchange of Information XML API
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