A hassle-free recovery of your tax overpayments to HMRC.
If you are self-employed or an employee with business expenses totalling £2,500 or more, you need to complete a tax return, and you may be due a tax rebate.
One of our qualified, experienced tax specialists will file your tax return with HMRC. At ADVANCE we offer a professional tax return completion service that can calculate and help you obtain a tax rebate.
Calculations assume 50 weeks of work per year. Tax rates based on 2026/27 thresholds (Basic 20%, Higher 40%) and Class 4 NI (6% & 2%). Expenses are factored in at an estimate of 25% of gross earnings to reduce tax liability. Calculation is subject to charges.
Have questions? Want to learn more? Or are you looking for some advice? Don’t worry our specialist team are available to support sole traders and contractors.
If you are currently self-employed or have been in the past, it can be hard to know if you need to file a self-assessment tax return.
HMRC’s tax deadlines can be confusing, too.
Our specialist tax returns team will look at your circumstances and let you know where you stand.
If you earn any income over £1,000 through self-employment during a tax year (which runs from 6th April to 5th April the following year), you’ll need to file a self-assessment tax return. This is regardless of the new MTD regulations, and it doesn’t matter if you are no longer self-employed, HMRC wants you to pay any tax that you may owe for the relevant tax year. If you are still unsure if you need to do a tax return, read HMRC's guide here.
Midnight on 31st January is the annual online self-assessment deadline for the tax year that ended the previous April. For example, 31st January 2026 was the deadline for the tax year that ran from 6th April 2024 to 5th April 2025. Similarly, 31st January 2027 will be the 2025/26 deadline and so on.
Failure to file your tax return and pay any tax that you owe by the deadline will result in an automatic £100 fine. It is therefore in your financial interests to get everything sorted in time for the deadline.
Use our Tax Rebate calculator to find out what rebate you may be entitled to receive. Alternatively, give our team of experts a call on 01244 564 564 and we can help you today.
Get in touch with our team of experts who are readily available to support your with your tax return.
Rated “Excellent” on Trustpilot, our clients, contractors and employees are happy to recommend ADVANCE time and time again. See our Trustpilot reviews to find out for yourself.
If you know a contractor or worker who would benefit from our services, simply refer them to the ADVANCE team today. As a thank you for your successful recommendation, we will treat you to a £50 voucher once they are up and running. The more you refer, the more you can earn. It’s that easy.
Got questions? We are here to help.
Here are a few of our most frequently asked questions.
You need to file a tax return if your income isn’t automatically taxed via PAYE (Pay As You Earn). The most common reasons include:
If you are employed and tax is deducted from your monthly payslip, you usually won’t need to do a thing.
The UK tax year wraps up on 5th April, and the absolute final deadlines to keep on your radar are:
Top tip: Missing the January deadline means missing the payment deadline too, so it is always best to file early and give yourself some breathing room in case you do have a tax liability to pay.
HMRC issues automatic penalties if you miss the midnight deadline on 31st January, even if you don’t actually owe any tax:
If there is a genuine, unforeseen reason for the delay, you can appeal, but it is always safer to submit well ahead of time.
You only pay tax on your actual profits. You can claim for any expenses that are wholly and exclusively for running your business, including:
Just remember to keep hold of your receipts and digital records for at least five years in case HMRC asks to take a quick look.
Your UTR is a unique 10-digit number that HMRC assigns to you when you register. If it has gone missing, you can easily spot it on:
If you still can’t find it, you can call the HMRC helpline, but do try to do this early in the year as the phone lines get incredibly busy the closer it gets to January.
