Cyfrifwch faint o dreth a Yswiriant Gwladol rydych chi'n ei arbed drwy wneud cyfraniadau aberthu cyflog i bensiwn, cynllun beicio i'r gwaith neu gynllun car trydan.
Based on 2026/27 tax rates. Salary sacrifice reduces your pensionable pay and may affect mortgage affordability, death-in-service benefits, and state pension entitlement. Always check your employment contract and take financial advice for large amounts.
Rhowch eich cyflog blynyddol gros
Defnyddiwch eich cyflog contractiol pennawd cyn unrhyw aberthu presennol.
Ychwanegwch y swm rydych chi'n bwriadu ei aberthu
Rhowch werth aberthu gros — cyfraniad pensiwn, cost misol EV × 12, cost pecyn beic.
Dewiswch y math o aberthu
Pensiwn, EV, beicio i'r gwaith neu feithrinfa yn y gweithle — mae gan bob un reolau ychydig yn wahanol a thriniaeth BIK.
Gweld arbedion treth incwm a NI
Mae'r cyfrifiannell yn dangos y dreth a'r NI rydych chi'n eu hosgoi (28% sylfaenol, 42% uwch) a chost net y budd.
Gwirio cydymffurfiaeth NMW
Rhaid i gyflog fesul awr ar ôl aberthu aros ar £12.21 neu'n uwch (NLW). Efallai y bydd angen i enillwyr isel leihau'r aberthu.
Ystyriwch effeithiau eilradd
Gwiriwch fforddiadwyedd morgais, SMP/SPP a cheisiadau morgais — mae benthycwyr yn defnyddio cyflog ar ôl aberthu fel tystiolaeth.
What happens after you submit your Self Assessment return — refunds, balancing payments, amendments, HMRC enquiries, the SA302 for mortgages, and the 5-year record-keeping rule
Making Tax Digital for Income Tax (MTD ITSA) starts April 2026 for £50k+ self-employed and landlords. Here's what it means, when it applies to you, the software requirements and how it changes Self Assessment forever.
How HMRC's payments-on-account system works, why your first January bill is bigger than expected, when to reduce them, and the trap of treating January and July as separate
Disclaimer: All results are estimates for guidance only and do not constitute financial, tax or legal advice. Always consult a qualified professional.