Sut i lenwi’ch Ffurflen Dreth ar gyfer Hunanasesiad
Sut i roi gwybod am eich incwm a hawlio rhyddhadau treth ac unrhyw ad-daliad sy’n ddyledus i chi drwy ddefnyddio Ffurflen Dreth SA100.
Dogfennau
Manylion
Dylech gyflwyno’ch Ffurflen Dreth Hunanasesiad ar-lein.
Os penderfynwch beidio â chyflwyno’ch Ffurflen Dreth ar-lein, ffoniwch ni i ofyn am Ffurflen Dreth bapur.
Yr SA100 yw’r brif Ffurflen Dreth ar gyfer unigolion. Defnyddiwch hi i gyflwyno’ch Ffurflen Dreth ar gyfer:
- ad-daliadau benthyciadau myfyrwyr
- llog a difidendau
- pensiynau a blwydd-daliadau’r DU
- talu i mewn i gynlluniau pensiwn cofrestredig
- rhoddion elusennol
- hawlio Lwfans Person Dall
- Tâl Treth Budd-dal Plant Incwm Uchel
- Lwfans Priodasol
- hawlio ad-daliad
Os ydych wedi gofyn am Ffurflen Dreth bapur, bydd angen i chi ei llenwi a’i phostio i CThEF.
Os ydych yn byw yn y DU, anfonwch hi i:
Hunanasesiad
Gwasanaeth Cwsmeriaid Cymraeg CThEF
HMRC
BX9 1ST
Y Deyrnas Unedig
Os ydych yn byw y tu allan i’r DU, anfonwch hi i:
Hunanasesiad – Tramor
Gwasanaeth Cwsmeriaid Cymraeg CThEF
HMRC
BX9 1ST
Y Deyrnas Unedig
Mae’n rhaid i CThEF gael eich Ffurflen Dreth bapur erbyn y dyddiad cau.
Os byddwch yn methu’r dyddiad cau ar gyfer cyflwyno ar bapur, anfonwch eich Ffurflen Dreth ar-lein yn lle hynny i osgoi cael cosb.
Mae’n bosibl y bydd angen i chi gynnwys tudalennau atodol ar gyfer rhai mathau o incwm.
Tudalennau atodol
SA102M: Gweinidogion yr efengyl
SA103F: Hunangyflogaeth (llawn)
SA107: Ymddiriedolaethau ac ati
SA108: Crynodeb o enillion cyfalaf
SA110: Crynodeb o’r cyfrifiad treth
Ffurflenni ac arweiniad cysylltiedig
Hawlio rhyddhad treth ar gyfraniadau pensiwn
Defnyddio’ch Ffurflen Dreth i roi gwybod i CThEF am Fenthyciad Myfyriwr
Diweddarwyd ddiwethaf ar 8 April 2024 + show all updates
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The form and notes have been added for tax year 2023 to 2024.
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The information in box 8 has been updated and an example has been added.
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The form and notes have been added for tax year 2022 to 2023.
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The form and notes have been added for tax year 2022 to 2023. We have removed the form and notes for 2018.
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The form and notes have been added for tax year 2020 to 2021.
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The address of where to send your completed paper tax return if you live outside the UK has been added.
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The form and notes have been added for tax year 2019 to 2020.
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The tax return form for tax year 2018 to 2019 has been updated.
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The Tax return form and notes have been added for tax year 2018 to 2019 and the Self Assessment returns address for Wales has been updated.
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The 2017 to 2018 form and notes have been added to this page.
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The 2016 to 2017 form and notes have been added to this page.
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Rates, allowances and duties have been updated for the tax year 2016 to 2017.
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Updates made to How to fill in your tax return (2015).
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Tax return 2015 updated with information about how HMRC will make repayments to customers.
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The 2015 to 2016 form has been added to this page.
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The Self Assessment/PAYE return postal address has now changed for the returns to be received by HMRC. The new postal address has been added to send back completed returns.
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Added translation