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Use this guidance to find out what information you need to provide and what forms to use for tax claims.
Tell HMRC about undeclared income, self-employment, capital gains, profits in a company and foreign income
Self Assessment tax returns - deadlines, who must send a tax return, penalties, corrections and returns for someone who has died.
Self Assessment is a system HM Revenue and Customs (HMRC) uses to collect…
You must send a tax return if, in the last tax year (6 April to 5 April),…
You must register for Self Assessment if you have to send a tax return and…
You must tell HMRC if you believe you no longer need to send a tax return.…
HM Revenue and Customs (HMRC) must receive your tax return and any money…
You’ll get a penalty if you need to send a tax return and you miss the…
You can make a change to a tax return after you filed it, for example…
If you need help with Self Assessment, you can: appoint someone to fill in…
If you’re the ‘personal representative’ (an executor or administrator) for…
How to prepare a Company Tax Return for your limited company or unincorporated association - deadlines, corrections and penalties
Find out about how to register a late Employment Related Securities (ERS) scheme, submit a late Enterprise Management Incentives notification, ERS end of year filing deadline, and updates to the Employee Tax Advantaged Share Scheme User Manual.
Income Tax is a tax you pay on your earnings - find out about what it is, how you pay and how to check you're paying the right amount using HMRC's tax calculator.
Use the online service if you're a sole trader or landlord to sign up voluntarily for Making Tax Digital for Income Tax and find out what to do next.
Accounts for Companies House and Company Tax Returns for HMRC - what you must send, deadlines, filing separately or together
300,000 early birds file their Self Assessment tax return in the first week of the new tax year.
Find out whether you need to pay UK tax on foreign income - residence and ‘non-dom’ status, tax returns, claiming relief if you’re taxed twice (including certificates of residence)
Find out about paying Corporation Tax, instead of Income Tax, if you’re a non-UK resident company with UK property income.
Find out what income you need to include in your tax credits claim or renewal.
How Income Tax and National Insurance contributions rules work if you’re a share fisher.
Small businesses can record income and expenses when money is actually paid rather than when they've invoiced or received
If you already have the right or have probate (as an executor or administrator) you can start dealing with the estate. You may need to apply for the right to deal with the estate of the person who's died (also...
Find out whether you need to pay tax on your UK income while you're living abroad - non-resident landlord scheme, tax returns, claiming relief if you’re taxed twice, personal allowance of tax-free income, form R43
File your Company Tax Return with HMRC, and your company accounts with Companies House
Personal pay and tax records you must keep to fill in a Self Assessment tax return: which records to keep, how long to keep records.
Tax advantages on employee share schemes including Share Incentive Plans, Save As You Earn, Company Share Option Plans and Enterprise Management Incentives
Find out if you can use the free online filing service to file your Company Tax Return with HMRC and accounts with Companies House.
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