If you are taxed under the Construction industry scheme (also known as the CIS), your contractor must withhold tax on its payments to you. This means you may overpay tax under the CIS and need to claim a refund.

If you complete a tax return and you overpay tax, you do not usually need to submit a separate claim for repayment. You claim your tax repayment through your self assessment tax return. Here, we explain how.

This page looks at what to do if you have paid too much tax on your employment or pension income.

If you no longer need to file Self Assessment tax returns, you should tell HMRC.

If, after you have filed your tax return, you become aware that an entry is incorrect, you can amend that return if you are in time to do so. Also, if you have used provisional figures when you completed a tax return, you will need to amend your tax return when the actual information becomes ...

Self Assessment payments usually become due on 31 January each year. Sometimes payments are also due on 31 July too. Here we explain which Self Assessment tax payments are due on each of these days.