MTD for Income Tax is the biggest change to how self-employed people and landlords report their income in a generation, and it starts landing in April 2026. If you run a sole trade or receive rental income, you need to know whether you are in the first wave, the second, or the third. This guide sets out exactly who is affected, when, and what you will actually be expected to do differently. We keep it honest: FINOVAY handles the bookkeeping and digital record-keeping side of MTD, not the filing of your tax return, which remains the job of a licensed tax practitioner.
What MTD for Income Tax actually is
Making Tax Digital for Income Tax (sometimes written MTD for ITSA, for Income Tax Self Assessment) replaces the once-a-year Self Assessment habit with a quarterly rhythm. Instead of scrambling for shoeboxes of receipts every January, affected taxpayers will keep digital records throughout the year and send HMRC a summary of income and expenses every three months using compatible software. At the end of the year you finalise everything with a Final Declaration, which replaces the old tax return.
The core idea is simple: keep the numbers current, send them regularly, and there is far less to reconcile at year end. The catch is that spreadsheets on their own no longer cut it unless they are bridged into approved software, and paper records are out entirely.
The thresholds: who is affected and when
Whether you are in scope, and from which date, depends on your qualifying income. This is the phrase that trips people up, because it is measured on gross figures, not profit. We explain it fully in what qualifying income actually means for MTD, but in short it is your total gross self-employment turnover plus your total gross rental income, before you deduct a single expense.
The rollout is phased by income band:
- From April 2026 — sole traders and landlords with qualifying income above £50,000 must comply.
- From April 2027 — the threshold drops to qualifying income above £30,000.
- From April 2028 — it drops again to qualifying income above £20,000.
HMRC works out which band you fall into using the figures on your most recently submitted Self Assessment return. So the 2024/25 return you filed by 31 January 2026 is what determines whether you are caught by the April 2026 start. If you are close to a threshold, that historic return matters more than you might think.
A worked example
Say you run a small trade turning over £38,000 and you also let one flat that brings in £16,000 of rent a year. Individually neither figure crosses £50,000. But MTD adds them together: £38,000 + £16,000 = £54,000 of qualifying income. That puts you in the April 2026 first wave, even though your actual profit after costs might be far lower. This is exactly why the gross-not-profit point matters so much.
Who is not affected (yet)
Not everyone is swept in on day one. You are outside the first phases if your qualifying income sits below £20,000, and the government has said it will keep the position of the smallest businesses under review rather than forcing them in immediately. Some groups are also exempt or deferred, including certain partnerships, people who genuinely cannot use digital tools, and specific trustee and estate situations. If English or Welsh is not your first language, or you have a disability that makes digital record-keeping impractical, you may be able to claim a digital exclusion. HMRC handles those applications individually.
What you will have to do differently
The practical changes fall into four buckets:
- Keep digital records. Every item of business income and expense must be captured digitally, in software that can talk to HMRC. No more annual pile of paper.
- Send quarterly updates. Four times a year you submit a cumulative summary of income and expenses for each business or property source.
- Finalise once a year. After the fourth quarter you make a Final Declaration, confirming the year is complete and correct, and any tax due is calculated from that.
- Use compatible software. Cloud tools such as Xero or QuickBooks, or approved bridging tools, become the backbone of the whole thing.
If your books are already clean and current, MTD is a formality. If they are not, the quarterly deadlines will expose that fast. Getting your record-keeping sorted before April is the single most valuable thing you can do, and it is precisely the work our bookkeeping service exists to take off your plate.
How to get ready before your start date
You do not need to panic, but you do need a plan. A sensible order of preparation looks like this:
- Check your latest Self Assessment figures and add up your true qualifying income so you know your start date.
- Choose MTD-compatible cloud software and get your bank feeds connected so transactions flow in automatically.
- Move any stray spreadsheets or paper processes into that software now, while there is no deadline pressure.
- Agree who does what: many people keep a bookkeeper for the quarterly record-keeping and a tax adviser for the Final Declaration and tax planning.
- Do a dry run of one quarter before it counts, so the first real submission is not the first time you have tried it.
If you are already behind, do not let that stall you — read how to fix bookkeeping you have fallen behind on and start there. You can review what we cover across our full services and see straightforward costs on our pricing page.
Penalties and the points system
MTD brings a points-based penalty regime for late quarterly submissions, working much like the one already used for VAT. Each late update earns a penalty point, and once you accumulate a set number of points a financial penalty follows, with separate penalties for paying tax late. The practical takeaway is that under MTD there are more deadlines to miss, so the cost of disorganised records rises. This is not a reason to panic, but it is a strong reason to have a reliable monthly rhythm in place before your start date, so that the quarterly submission is a two-minute confirmation rather than a scramble. A steady close each month — of the kind set out in our month-end close checklist — is the simplest insurance against those points.
Common myths worth clearing up
Several things get repeated online that simply are not true, and clearing them up saves a lot of needless worry:
- MTD does not mean paying tax four times a year. The quarterly updates are informational; your payment dates are unchanged for now.
- MTD for Income Tax is not the same as MTD for VAT. Being signed up for one does not automatically enrol you for the other — they are separate regimes with separate rules.
- You are not forced to become your own accountant. You can keep a bookkeeper for the records and a tax adviser for the return, exactly as many people do today.
- Spreadsheets are not entirely banned, but on their own they are not enough — they must be linked into compatible software through bridging tools.
Keeping these straight in your head removes most of the anxiety people feel about the change. MTD for Income Tax is a shift in rhythm and record-keeping, not a wholesale reinvention of how you are taxed.
How FINOVAY can help
FINOVAY gets your records MTD-ready and keeps them that way: cloud software setup, bank reconciliation, and clean quarterly figures your tax adviser can rely on. We do the bookkeeping, not the tax filing, which means everything is in order well before any deadline. If you want to know your MTD for Income Tax start date and get ahead of it, talk to us.