{"id":855,"date":"2019-07-15T15:40:06","date_gmt":"2019-07-15T14:40:06","guid":{"rendered":"https:\/\/taxfix.com\/en-uk\/?p=855"},"modified":"2026-02-02T17:07:03","modified_gmt":"2026-02-02T17:07:03","slug":"sa108-form","status":"publish","type":"post","link":"https:\/\/taxfix.com\/en-uk\/self-assessment-basics\/sa108-form\/","title":{"rendered":"The SA108 form: how to use it to file your Capital Gains Tax"},"content":{"rendered":"<\/div> \n\n
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Hey, have you sorted your tax return yet?<\/h2>\n\n \n \n
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Avoid costly mistakes and let Taxfix take care of it for you. Our UK-accredited accountants make filing quick and stress-free, starting from just \u00a3119.<\/span><\/p>\n<\/div>\n <\/div>\n\n \n \n

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The SA108 form is a supplementary document you must fill and submit to HMRC as part of your tax return if you have tax to pay on your capital gains<\/a>. This is done via post.<\/p>\n\n\n<\/div> \n\n

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Capital gains tax<\/b> rates in the 2025\/26 tax year. It\u2019s paid on profits over the \u00a33,000 CGT allowance \ud83d\udc47<\/span><\/p>\n\n\n\n\n\n\n\n
Type of asset<\/b><\/td>\nBasic rate<\/b><\/td>\nHigher rate<\/b><\/td>\n<\/tr>\n
Shares<\/span><\/td>\n10%<\/span><\/td>\n20%<\/span><\/td>\n<\/tr>\n
Residential property<\/span><\/td>\n18%<\/span><\/td>\n24%<\/span><\/td>\n<\/tr>\n
Bitcoin\/cryptocurrency<\/span><\/td>\n10%<\/span><\/td>\n20%<\/span><\/td>\n<\/tr>\n
Other<\/span><\/td>\n10%<\/span><\/td>\n20%<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n <\/div>\n<\/div> \n\n
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While you can file your tax return online, some people prefer to, or can only post it. This is how you would report your capital gains and pay tax to HMRC when filing your tax return via post.<\/p>\n\n\n\n

How do I know when I need to use the SA108 form?<\/h2>\n\n\n\n

Use it when you\u2019ve sold any of these for a profit<\/a>:<\/p>\n\n\n\n