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Find out the approaches you can take for PAYE Settlement Agreements (PSA) to lower the risk of tax non-compliance and reduce the likelihood of checks.
This factsheet tells you what information and documents you need to give HMRC for them to check your tax position.
Find out the rules from 1 January 2018 if you promote or use arrangements that are meant to give someone a VAT or other indirect tax saving or a tax deferral.
Find software developers that can help with entry summary declarations including safety and security declarations for imports.
Use this calculator to work out how much creative industry tax relief or expenditure credits you may get for your production and where to claim it on your Corporation Tax return.
Guidance for software developers on the IRmark.
CT600 V3 (2026) and V2 (2009) RIM artefacts for Corporation Tax software developers.
Find out about the tax avoidance arrangements used by some umbrella companies.
Guidance for voluntary and community sector organisations on how to apply for HMRC's funding grant for 2027 to 2030.
Use forms P11D and P11D Working Sheets (2022 to 2023) to help develop payroll software if you're a PAYE software developer.
Check the availability and any issues affecting the Do a tax check when applying for a licence service.
Get help if you’re a tax agent or adviser who has clients with property rental income to declare on Self Assessment tax returns.
Check the availability and any issues affecting the Import Control System 2 (ICS2) service.
Find out when and how to report to HMRC under the Cryptoasset Reporting Framework (CARF).
This factsheet gives information about when you may be jointly and severally liable for the relevant tax liability of a company because you’ve been connected to companies which have become insolvent with amounts due to HMRC.
Data Provisioning Service technical specifications for software developers, including tax code, student loan and generic notifications.
Read Income Tax guidance for software developers working with payroll software.
When penalties are charged for late or incorrect Stamp Duty Reserve Tax (SDRT) notices, and how these penalties are worked out.
How to register and use the online Notification of Vehicle Arrivals (NOVA) service for agents.
Real Time Information (RTI) Rules and Interface Management (RIM) artefacts and supporting technical specifications for software developers.
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