04/09/2026
Think Self Assessment only applies if you're self-employed? It also covers rental income, dividends, savings interest, foreign income, and the High Income Child Benefit Charge if you don't pay it through PAYE.
Miss the 31 January deadline and you'll face an automatic £100 penalty, plus daily charges and interest on unpaid tax.
Mapus-Smith & Lemmon takes the stress out of Self Assessment by:
- checking whether you actually need to file a return
- preparing accurate figures and submitting on time
- handling corrections or penalty appeals if needed
Get in touch now to make sure your return is ready well before the deadline.
👉🏻 Ready to grow? Let's talk: https://www.mapus.co.uk/