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Self Assessment tax return, fast.
Get ahead of the game and file in just 5 days!
- Complete your Self Assessment quickly & compliantly
- Avoid stress, and fines of £310 p/month
- Steer clear of paying 7% interest on late payments
- Easy process and experienced accountants
Join thousands of small
UK businesses who trust Baa
with their Self Assessment every year
Who we help
Baa can help anyone who needs to file a Self Assessment tax return.
Whether you're a limited company, a sole trader, a freelancer or contractor, our fast, fixed-fee Self Assessment service gives you everything you need, and nothing you don't.
Why wait for January when you can get it out the way now and stay well clear of any late-filing penalties?
File with Baa now and get the job done!
How does it work?
It's an easy, three-step process.
Step 1
Book your free consultation. We'll talk you through the process and get all the details we need to file your Self Assessment.
Step 2
We'll handle it all. No mess, no fuss. Just an accurate, timely submission.
Step 3
Relax for another year. With your accounts filed and submitted, you're free to get on with the day job.
Self Assessment deadlines and fines
When is the Self Assessment deadline?
The deadline for filing your Self Assessment tax return is January 31st 2026. That may seem far away now, but why put off to tomorrow what you can do today? Starting the process early means you can get your tax return filed and out of the way for ultimate peace of mind. Plus, no last minute stress or late-filing penalties!
How much will I be fined for late filing?
You’re automatically hit with a £100 fine from HMRC if your tax return is up to 3 months late. Then, if you file after this period the fine continues to increase, and you’ll be charged 7% interest on late payments. Here's a breakdown of the fines you’re facing:
- Over 3 months late: £10 per day, up to a maximum of £900
- Over 6 months late: Another £300 fine or an additional 5% of tax owed - whichever is higher – totalling £1300
- Over 12 months late: Another £300 fine or an additional 5% of tax owed - whichever is higher – totalling £1600.
Do I need to file a Self Assessment?
Yes, anyone who is self-employed and earns over £1,000 in the same tax year has to file a Self Assessment. It’s important to file on time and be accurate in your submission because this is how HMRC calculates and collects the income tax you owe.
If I’m filing late, what do I need to provide?
Delaying your filing duties now means there's an increased chance of filing late as the deadline creeps in. If that happens, you’ll need to share a breakdown of your income for the year, any supporting documentation, proof of ID and address. Going forward, it’s crucial to keep on top of your bank statements and receipts year-round to make filing easy, quick and accurate.
What happens if I've been paying too much tax?
This can happen – and if it does, you may be due a tax refund. Our tax specialists will help you to spot this and make HMRC aware.
Why people like you,
choose to work with Baa
Expert help
We're real accountants, with years of expertise helping self-employed people like you.
Help avoiding fines
We know that the risk of an HMRC fine is the most important thing to you – which is why our service is rapid, and compliant.
No tie-in
If you just need us to file your Self Assessment, that's fine. We'll just submit your tax return, for a single, one-off fee.
About Baa Accounting
We're the go-to team for all things finance for the self-employed. Alongside Self Assessment we can help with your company tax returns, accounts filing and bookkeeping.
Find out more about our range of expert services:
Account filing
We'll check your numbers, prepare your documents, sort your corporation tax (CT600) and file your company accounts.
Bookkeeping
We'll set you up on FreeAgent - the UK's #1 bookeeping software - complete a year-end review, and get you ready for your year-end submission.
CIS rebate
Working in construction? Get up to £3900 in rebates, with the help of our CIS experts.
FAQs
Is anyone exempt from Self-Assessment?
Regardless of whether you make a profit or loss from your self-employment, you need to file a Self Assessment tax return. The only exception is if your trading income is below £1,000.
How long does the process take?
Our filing service typically takes between 3-5 days. If you're really up against the clock, we can file your Self Assessment in 48 hours, via our express service.
How will you look after my data?
You can trust that our process is highly secure. We've been awarded the Cyber Essentials Plus certificate, which means we'll keep your financial information safe and confidential in line with our strict data protection policies.
What if I've already missed the deadline?
File now and this won't be a worry! But don't panic if you've missed the deadline - it happens. The important thing is to take action as quickly as you can. We can process your Self Assessment in as little as 48 hours, and the sooner we get started, the sooner HMRC will be satisfied.