Need help with your tax return? Find out what you need to do, when and how

Self Assessment - Welsh language pages

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Self Assessment

Your tax return: the basicsWho needs to complete a tax return, types of tax return, record keeping, deadlines, bills and payments and more.

File your tax return onlineSave time and get your tax calculated automatically when you file your tax return online, how to sign up and view your account online.

Your tax bill, payments, deadlines, corrections and refundsUnderstanding your tax calculation or Statement of Account, payment deadlines, problems paying, corrections and refunds.

Appeals, penalties and tax enquiriesHow to appeal against a tax decision, payment deadlines and penalites, when and why we carry out enquires into tax returns.

Tax returns if you're self-employed or in a partnershipCompleting the Self Assessment tax return and record keeping if you're self-employed or in a partnership.

Dealing with a tax return for someone who has diedTax returns and paying or reclaiming tax as an executor or personal representative of someone who has died.

Tax returns for trustees or charitiesCompleting a trusts tax return as a trustee, records you'll need to keep, deadlines and where to get help and advice.

Tax returns for registered pension schemesWho needs to complete a pension scheme tax return, how to complete it, record keeping, deadlines and where to get help and advice.

Tax returns, forms and help sheetsQuick links to all Self Assessment forms and help sheets.

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