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Technical specification for HMRCmark software developers.
Draft forms are an aid for software developers in the development of payroll software.
Check the availability and any issues affecting the Reverse Charge Sales List (RCSL) online service.
Technical specification for National Export System (NES) XML channel software developers.
SDLT5 substitute technical specifications for Stamp Tax Online software developers.
Technical specifications for Stamp Tax Online software developers.
Guidance for EC Sales List online developers on Government Gateway.
Individual returns technical specifications for Self Assessment Online software developers.
Use this technical documentation for individual returns if you're a software developer working with the Self Assessment online service.
Agent authorisation Corporation Tax technical specifications for software developers.
Real Time Information (RTI) Rules and Interface Management (RIM) artefacts and supporting technical specifications for software developers.
Local Test Service (LTS), Gateway Reflector and compressed data xml samples for Charities Online software developers.
Guidance for software developers on how to produce an IRmark for SOAP Protocol services.
Forms P60 (2017 to 2018) for PAYE software developers.
This document and its annexes set out the original terms of collaboration between HMRC and software developers.
Use this technical documentation for individual returns if you're a software developer working with the Self Assessment Online service.
Use this guidance for support if you're a software developer working with the Self Assessment Online service.
Check the availability and any issues affecting the Online End of Year Expenses and Benefits online service.
Don’t include personal or financial information like your National Insurance number or credit card details.
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