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Find out how to send annual returns if you're an ISA manager.
Consistent and standards-based comma-separated values (CSV) files help make data more effective and easier to share across government.
Find out how to complete and submit a return using the HMRC spreadsheet or electronic flat text file (EFTF).
Check how to send life insurance Chargeable Event Certificates in electronic flat text file format to HMRC for gains occurring on or after 6 April 2002.
Learn how to publish accessible documents to meet the needs of all users under the accessibility regulations.
Find out how to complete and submit an Other Interest (OI) return using the HMRC spreadsheet or electronic flat text file.
Download the Price Paid Data (PPD) in text or CSV format and access our linked data.
This guidance is an introduction to the Open Document Format (ODF) standard and how you can select ODF-compliant solutions.
Find out how to complete and send a relief at source annual information return if you are a pension scheme administrator.
Find out how to submit your Registered Pension Schemes relief at source annual information return electronically as a flat text file.
Information about how to upload data to the National Fraud Initiative (NFI) and how to format the data correctly to avoid issues.
You can send elections, notifications and returns to HM Revenue and Customs by email or electronically to the company’s Shared Workspace.
Find out how to create a CSV file to submit your declaration, what file layout to use and how to resolve problems with file upload failures.
How to report chargeable event gains on life insurance policies, including details on the annual qualifying policy if you're an insurer.
Detailed information about vehicles in the UK, which would be too large to use as structured tables. They are provided as simple CSV text files.
Find out about making an Other Interest return and the types of interest you should report.
Don’t include personal or financial information like your National Insurance number or credit card details.
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