If you have a side hustle, the short answer is this: Making Tax Digital does not apply to all side hustle income. It is aimed at people who are sole traders or landlords, are registered for Self Assessment and have qualifying self-employment or property income above HMRC’s threshold. That means some people with extra income will need to think about Making Tax Digital, while others will simply need to make sure they report income correctly to HMRC.
That distinction matters. Many people use “side hustle” as a catch-all term for any extra income. HMRC uses the phrase too when discussing money made through online platforms, marketplaces and social media. But HMRC’s Making Tax Digital for Income Tax guidance is framed around self-employment income and property income, not every possible source of extra money.
For sole traders, landlords and anyone building a second income stream, the practical question is not just “Do I have a side hustle?” It is “What type of income is this, am I in Self Assessment and do I meet the conditions for MTD for Income Tax?”
Below, Business Help Group UK explains where the line is, what HMRC currently says and what you should do next if your side income is growing.
What counts as a side hustle for tax purposes?
HMRC recognises that people may earn extra income alongside a main job and says this is sometimes called a side hustle. Its guidance highlights income from online marketplaces and social media as common examples and explains that you may need to tell HMRC about that income depending on your circumstances. You can see HMRC’s wording in its official page on checking if you need to tell HMRC about income from online platforms.
In practice, a side hustle could include:
- selling goods online
- providing freelance services in your spare time
- content creation or influencer income through social media
- running a small trade alongside employment
- renting out property if that is additional to your main work
However, the phrase “side hustle” is informal. Tax treatment depends on the nature of the income, not the label. That is why two people with “side hustle” income could have very different obligations.
Does Making Tax Digital apply to side hustle income?
Sometimes yes, but not automatically.
According to HMRC, Making Tax Digital for Income Tax applies if you are:
- a sole trader or landlord
- registered for Self Assessment
- receiving income from self-employment or property
- and your qualifying income is above the relevant threshold
So if your side hustle is a genuine sole trade and you are in Self Assessment, MTD may apply once you meet HMRC’s conditions. If your extra income is not self-employment income or property income, that is a different analysis. You may still need to report it to HMRC, but MTD for Income Tax may not be the regime that applies.
This is the key point many articles miss: having a side hustle does not by itself bring you into MTD. The decisive factors are your status, your type of income and whether your qualifying income crosses the threshold set out by HMRC.
Who will need to use MTD for Income Tax from April 2026?
HMRC’s current collection page states that from 6 April 2026, sole traders and landlords with annual self-employment and property income over £50,000 must use Making Tax Digital for Income Tax. This is the live position stated on HMRC’s official Making Tax Digital for Income Tax collection page.
That means some people with a substantial side business or rental income will be brought in from that date, even if the activity started as a part-time extra earner rather than a full-time business.
It also means many smaller side hustles will not fall into MTD from April 2026 if they do not meet the conditions above. They may still have tax reporting obligations, but that is not the same as being mandated into MTD for Income Tax.
Because HMRC’s rules turn on qualifying income and taxpayer status, anyone with mixed income sources should be careful not to assume that “side hustle” equals “MTD” or that “small” automatically means “exempt forever”.
Why this matters for growing side businesses
A side hustle can change quickly. Someone who starts by testing a business idea on evenings or weekends may later:
- register for Self Assessment
- begin trading regularly as a sole trader
- take on more clients or customers
- cross HMRC’s qualifying income threshold
At that point, MTD may move from being a distant issue to a live compliance requirement.
What if I sell through online platforms or earn on social media?
HMRC’s side-hustle guidance makes clear that income from online platforms or social media can still need to be reported. The fact that the money comes through a platform does not remove your tax obligations. HMRC’s official page explains this here: check if you need to tell HMRC about your income from online platforms.
But this is where people often conflate two separate issues:
- whether income must be reported to HMRC
- whether MTD for Income Tax applies
They are not the same question.
If your online platform income amounts to self-employment and you are in Self Assessment, you may eventually fall into MTD if HMRC’s conditions are met. If not, you may still need to notify and report income through the normal tax framework without yet being within MTD.
For example, someone selling regularly for profit online may be closer to a sole trade than someone making occasional disposals of personal items. The label used by a platform is not what determines the tax result. The facts do.
What records and systems should side hustlers be thinking about now?
Even if MTD does not apply to you immediately, growing side income is a good reason to improve your record-keeping now. MTD for Income Tax is built around digital records and compatible software, so waiting until HMRC signs you up is rarely the easiest route.
If your side hustle is a sole trade or rental activity, it is sensible to:
- separate business and personal transactions where possible
- keep complete records of income and allowable costs
- track whether income is from self-employment, property or another source
- review whether you are already in Self Assessment
- check whether your qualifying income could bring you into MTD
That approach helps whether you are already above HMRC’s threshold or simply planning for growth.
Do not rely on assumptions based on informal language
“Side hustle” is useful everyday language, but it is not a precise tax category. A careful review can prevent common mistakes such as:
- thinking PAYE employment means no separate tax reporting is needed
- assuming online platform income is below HMRC’s radar
- believing MTD applies to every second income automatically
- ignoring the difference between self-employment income and other receipts
When will HMRC start signing people up?
HMRC states that it will begin signing up anyone who needs to use MTD for Income Tax for the 2026 to 2027 tax year from September 2026 if they have not already signed up voluntarily. That timetable appears on HMRC’s official Making Tax Digital for Income Tax collection page.
For side hustlers this means preparation should happen well before HMRC begins the sign-up process. If your extra income is moving into the territory of a substantial sole trade or property business, software choice, bookkeeping habits and adviser support should be considered early.
How to tell whether your side hustle is likely to fall within MTD
A practical first filter is to ask these questions:
1. Is the income from self-employment or property?
HMRC’s MTD for Income Tax guidance is directed at self-employment and property income. If your side income does not fit those categories, MTD may not be the relevant regime, even though tax reporting may still be required.
2. Are you registered for Self Assessment?
HMRC’s guidance says MTD for Income Tax applies to sole traders and landlords who are registered for Self Assessment. If you should be in Self Assessment but are not yet registered, that is an issue to deal with before MTD readiness is even considered properly.
3. Is your qualifying income above HMRC’s threshold?
HMRC’s current published threshold for mandatory entry from April 2026 is over £50,000 of annual self-employment and property income for the taxpayers described above. The official wording is on HMRC’s MTD for Income Tax pages.
If the answer to all three is yes, MTD is likely to be a live issue for you.
Announcements, guidance and law: why wording matters
With tax change, there is often a difference between what is proposed, what is announced and what is already in force. In this article, we have relied on current HMRC guidance pages that set out the live official position on who needs to use MTD for Income Tax and when.
We have not included extra claims about later threshold changes or Budget amendments unless directly supported by the official sources listed above. That is deliberate. If you are making business decisions, especially around software or compliance timing, it is worth checking the latest HMRC guidance and taking tailored advice.
What should sole traders and landlords do next?
If your side hustle is becoming a serious income stream, the safest next steps are practical rather than theoretical:
- confirm what type of income you have
- check whether you need to be in Self Assessment
- review whether HMRC’s MTD conditions apply to you
- get your records organised digitally before deadlines become urgent
- speak to an adviser if your income sources are mixed or unclear
This is especially important for people who are employed full-time and trading on the side. It is very common for the “main job” to get all the attention while the side business quietly grows into a tax and compliance issue that needs its own structure.
FAQ: making tax digital side hustle
Does Making Tax Digital apply to every side hustle?
No. HMRC’s MTD for Income Tax guidance is aimed at sole traders and landlords who are registered for Self Assessment, receive self-employment or property income and meet the relevant qualifying income threshold.
Do I still need to tell HMRC about side hustle income if MTD does not apply?
Possibly, yes. HMRC says income from online platforms or social media may need to be reported even if it is not your main income. See HMRC’s official guidance on telling HMRC about income from online platforms.
What if I have a job and a small freelance business on the side?
Your employment does not stop your freelance income from being relevant for tax. If the freelance activity is self-employment and you are in Self Assessment, MTD may become relevant if your qualifying income rises above HMRC’s threshold. The key HMRC page is find out if and when you need to use MTD for Income Tax.
When does MTD for Income Tax start for affected side hustlers?
HMRC’s current collection page says that from 6 April 2026, sole traders and landlords with annual self-employment and property income over £50,000 must use MTD for Income Tax.
Will HMRC contact me if I need to join?
HMRC says it will begin signing up taxpayers who need to use MTD for Income Tax for the 2026 to 2027 tax year from September 2026 if they have not already signed up.
Final word
If you were searching for a simple yes-or-no answer, here it is again: Making Tax Digital does not apply to all side hustle income. It is targeted at Self Assessment sole traders and landlords with qualifying self-employment or property income above HMRC’s threshold. Plenty of side hustlers will still need to report income to HMRC, but that does not automatically mean they are within MTD for Income Tax right now.
If you are unsure where your income fits, Business Help Group UK can help you assess whether your side hustle is a taxable trade, whether Self Assessment is required and whether MTD preparation should already be on your agenda. If your extra income is growing, now is the time to get clarity. Get in touch with Business Help Group UK for practical support tailored to your circumstances.
