Category Archives: Uncategorized

Use this technical documentation for individual returns if you’re a software developer working with the Self Assessment online service.

Information about Supplementary Declarations (SDs).

How to complete and submit an Other Interest (OI) return using the HMRC spreadsheet or electronic flat text file.

Find out about making an Other Interest return and the types of interest you should report.

Find out how a non-UK resident company trading in the UK through a dependent agent permanent establishment (DAPE) would register for Corporation Tax.

What you need to include in your Soft Drinks Industry Levy return, how to correct an error in a previous return and what records to keep.

EU and non-EU import and export data for May 2025.

If your payment is more than 15 days overdue, first and second late payment penalties apply. Find out how to avoid penalties and get help to pay in instalments.

Find statutory market values for disposal of category 1 oil from a UK field, which has not been sold at arm’s length.

Use form MATCF to apply for Marriage Allowance to transfer 10% of your Personal Allowance to your husband, wife or civil partner.