My account
✓ Tax return submission
✓ Dedicated account manager
✓ Year-round advice & support
✓ Easy-to-use software
We've helped more than 53,000 sole traders across the UK manage their taxes
We can help you manage your tax return and work out if you’re entitled to a refund.
This includes:
✓ Reviewing your income and expenses
✓ Submitting your tax return to HMRC for you
✓ We’ll collect any tax refund due and pay it across to you
We have a team of tax experts here to get to know your income and expenses and help make sure you only pay the tax you owe.
We’ll review everything you provide to help make sure you’re operating in the most tax efficient way possible.
Your dedicated account manager will be on hand to help answer any questions you have throughout the year.
Unlike some of the accountancy apps, our human support is there to give you peace of mind, whenever you need it.
MTD is HMRC’s plan to digitise the system for VAT, Income Tax Self-Assessment (ITSA) and Corporation Tax for businesses.
MTD aims to make the processing of returns simpler and more efficient for everyone.
There are 3 key changes MTD will make to your financial management for Income Tax Self-Assessment (ITSA):
You will submit a final Tax return at the end of the year to:
IN-SYNC are already compliant with MTD and equipped to manage the additional paperwork. We’re here to help and make this transition easier for you!
By April 2026 - Businesses, landlords and sole traders with gross income greater than £50,000 will need to be registered for MTD and comply with its rules for ITSA for the 2026/27 Tax year
By April 2027 - Businesses, landlords and sole traders with gross income over £30,000 will need to be registered for MTD and comply with its rules for ITSA for the 2027/28 Tax year.
Yes! You will need to sign up for MTD for Income Tax separately and IN-SYNC can do this for you.
IN-SYNC are already compliant with MTD and equipped to manage to the additional paperwork. We’re here to help and make this transition easier for you!
Allowable expenses for self-employed people are divided into lots of different categories. These include:
It’s important to get your self-employed business expenses right. Claiming for the wrong expenses could land you in hot water with HMRC, but then again, failing to claim your allowable expenses could mean you pay more tax than necessary.
Expenses if you're self-employed: Overview - GOV.UK (www.gov.uk)
A UTR number is a unique taxpayer reference number. It is 10 digits long, and you are given one by HMRC when you register for self-employment.
You usually pay 2 types of National Insurance Contributions (NICs) if you’re self-employed, Class 2 and Class 4. For further information click here
You don’t need to send proof of business expenses when you submit your self-employment tax returns. But you do need to keep proof and records of your expenses just in case HMRC asks to see them.
A self-employed individual is required to keep their records for at least 5 years after the 31st January submission deadline for the relevant tax year.
Example: 2022/23 tax year, due by 31st January 2024 – records must be kept to 31st January 2029.
Self-employed business expenses are your running costs. Some of these costs will be classed as ‘allowable expenses’ by HMRC. These can be deducted from your tax bill, so you’ll be taxed on the remaining profit once these have been taken off.
You might be wondering, ‘what can I claim as self employed allowable expenses?’ Allowable business expenses for self employed people typically include things like office supplies and equipment, business travel and job-specific training.
For an electrician, that might look like purchasing a work van and fuel to travel to clients. For an Etsy seller, that could mean buying packaging that keeps your products safe on their journey to customers.
Getting your allowable expenses right matters. Say your annual turnover is £65,000, but you claim £10,000 in allowable expenses. You’ll be taxed on the remaining £55,000 instead of £65,000.
It’s also important not to overclaim business allowable expenses. If HMRC has reason to believe you’re hiding your true profit, you could face an investigation and a penalty.
Claiming the right allowable expenses means you also pay the right amount of tax. Your self-employment tax bill is calculated based on your taxable profit – not your total turnover. So claiming the right amount of allowable expenses can reduce your tax bill.
But it’s not just about tax. Business allowable expenses for self-employed people can include things like professional development courses and training. So you can use your allowable expenses to forward your career and improve the skills that make your business thrive.
The 31st of October for paper returns and 31st of January for online returns.
If you miss the deadline, you will immediately receive a £100 penalty from HMRC. If the return is still not received within three months of the filing date, you will be charged £10 a day (up to £900). If it is still not received by six months (31st July), you will receive an additional £300 penalty, and a further £300 penalty is also charged after 12 months. Please be aware that interest will also be due on top of these penalties made by HMRC.
Yes, you need to keep your business receipts as we or HMRC may carry out checks to support your tax return.
HMRC can charge you a penalty if your records are not accurate, complete or readable.