When is the Self Assessment deadline?
Online returns are due by 31 January following the end of the tax year, with any balancing payment due the same day. A second payment on account is usually due by 31 July.
Self Assessment
Self Assessment returns, prepared and explained.
We prepare and submit Self Assessment tax returns for individuals, sole traders, company directors, landlords and other taxpayers. We make sure the correct income and allowable expenses are included, calculate your tax liability and help you understand what needs to be paid and when. Where possible, we also identify legitimate ways to improve your tax position and plan more effectively for the future.
- Everything included. Dividends, rent, gains and side income, not just the obvious.
- The number early. Liability and payments on account shown well before January.
- Filed ahead. Never against the deadline.
Self AssessmentFiled
Income gathered
Done
Return prepared
Done
Filed with HMRC
Before 31 Jan
Payments on account already planned for
The return
Everything that should be on it, and nothing that should not.
For directors, landlords, sole traders and anyone with income that does not come through PAYE alone.
Directors & dividends
Salary, dividends and benefits brought together correctly.
Landlords
Rental income with finance costs treated the way HMRC expects.
Sole traders
Returns prepared from proper accounts, not a spreadsheet guess.
Payments on account
The July and January schedule explained and reduced where justified.
In practice
Filed correctly, with no January panic.
A Self Assessment return has to capture every source of income for the year, not just the obvious one. Dividends, rental income, savings interest, capital gains and side income all belong on it.
We work through the full picture, apply the allowances you are entitled to, and tell you the number before the deadline rather than on it.
- Sole trader and partnership income prepared from proper accounts.
- Dividends, salary and benefits for company directors.
- Rental income with mortgage interest relief treated correctly.
- Capital gains, pension contributions and Gift Aid included where relevant.
Payments and planning
Know the bill early, including the payments on account.
The part that catches people out is rarely the balancing payment. It is the payments on account for the following year, which can arrive at the same time and effectively make the January bill much larger than expected.
We show you the full schedule as soon as the return is prepared, so it can be planned for.
- Tax liability calculated with payment dates set out clearly.
- Payments on account explained, and reduced where that is justified.
- Allowable expenses reviewed so nothing legitimate is missed.
- Filing well ahead of 31 January rather than against it.
How it starts
Three steps, no upheaval.
Tell us where you are
A short call about how self assessment is handled today and what is causing friction.
We set the routine
Records, deadlines and handover organised, including professional clearance from your current accountant if you are switching.
You see everything early
Work finished ahead of deadlines, figures explained in plain English, and one specialist who answers.
Who this helps
Built for the sectors we know best.
Frequently asked questions
Self Assessment questions we hear most.
Do company directors have to file a return?
Not automatically, but most do because of dividend income or because HMRC has issued a notice to file. If you have been asked to file, the obligation stands until HMRC withdraws it.
What expenses can landlords claim?
Allowable costs generally include letting agent fees, repairs, insurance and certain professional fees. Finance costs such as mortgage interest are handled through a basic-rate tax reduction rather than as an expense.
Related services
What this usually sits alongside.
Need help with your accounts?
Speak to our Harrow accountants today. Tell us how self assessment works in your business now, and we will tell you how we would run it.