Making Tax Digital for UK window cleaners: what changes from April 2026

TL;DR: Making Tax Digital for Income Tax affects sole traders and landlords in stages: qualifying income over GBP 50,000 from 6 April 2026, over GBP 30,000 from 6 April 2027, and over GBP 20,000 from 6 April 2028. For UK window cleaners, the practical work is keeping digital records through the year and submitting quarterly updates from software, not rebuilding the accounts at the last minute.

Current HMRC rule: Each update is calculated by compatible software from digital records and covers cumulative category totals from the start of the tax year to the end of the update period - not only the previous three months. If record keeping and filing use different software, keep a permitted digital link between them; manual re-keying or clipboard transfer is not a digital link. HMRC will not apply penalty points for late quarterly updates in 2026/27, but the updates must still be sent before you submit your Self Assessment tax return using compatible software. Check HMRC digital-record guidance, quarterly-update guidance and HMRC's current MTD journey.

If you run a window cleaner business as a sole trader, Making Tax Digital for Income Tax changes the rhythm of your admin. It does not change the underlying idea that you record income and expenses. It changes when those records need to be digital and how often summary figures are sent to HMRC.

HMRC's current guidance explains the staged start dates and qualifying-income thresholds here: Use Making Tax Digital for Income Tax. Check that official guidance or speak to your accountant before making decisions for your own business.

For window cleaners, the change is not a new kind of tax. It is a new operating rhythm for records. Digital income and expense records need to be kept as the year goes, quarterly updates become part of the timetable, and you still submit a Self Assessment tax return using compatible software for the year.

That matters because many small receipts can blur together, while cash and bank transfers may mix. Those timings can make the records look uneven if they are only rebuilt months later. Current records make the pattern easier to explain.

Every trade has its own record-keeping wrinkles. For window cleaners, the common ones are:

• Many small receipts can blur together. Window cleaning often involves lots of small payments. Record them regularly so the quarter is not reconstructed from bank lines alone.
• Cash and bank transfers may mix. Cash is workable if recorded promptly. The problem is not the payment method; it is missing detail.
• Equipment costs do not match weekly income. Poles, filters, hoses and van repairs may land in one quarter while income stays steady. Record the cost when paid.
• Weather can move work between quarters. Bad weather can push cleans into another period. That is normal when the round record explains the shift.

For a window cleaner, those are normal commercial patterns rather than problems by themselves. The risk is letting them sit in memory until a quarterly update or year-end review forces you to rebuild the story from fragments.

For a window cleaner, income may come from one-off jobs, repeat customers, deposits, add-ons and retained arrangements. Record each payment when it arrives and connect it back to the job, customer, route, booking or invoice that produced it.

Use the customer round record, invoice or route reference as the anchor for deposits, balances and late-settling income. Save receipts for water and filtration supplies and poles and equipment as soon as they arrive, so the cost side is not waiting on customer settlement before it is recorded. If cash is still part of your business, record it in the same week. Cash is not the issue; missing records are.

Most window cleaners will need clear categories for:

• water and filtration supplies
• poles and equipment
• van costs
• fuel
• software
• payment fees

Keep those categories stable enough that water and filtration supplies, poles and equipment and van costs land in the same place each month. A short, consistent list is more useful than a complicated one that changes whenever the paperwork gets busy.

The least painful MTD preparation is weekly, not annual. For window cleaners, that means adapting the same admin habit you already need for the business:

• record each payment against the customer round record or invoice it belongs to
• save receipts for water and filtration supplies and poles and equipment
• mark deposits, balances or delayed payments while the detail is current
• note any unusual week or quarter while the detail is still fresh
• move the week's income and expenses into the digital finance record

That weekly habit is not about doing a tax return every Friday. It is about making the quarterly update a summary of records you already hold from the way the window cleaner business actually runs.

Cloud bookkeeping software can be easier if you want bank feeds and direct submission. A spreadsheet plus bridging software can work for simpler businesses if it is maintained properly. An accountant-led route can also work, but your accountant still needs timely digital records from you.

For many window cleaners, a spreadsheet is the bridge between informal records and full software. It works only if it is updated consistently. A spreadsheet abandoned until year-end is not a practical MTD plan.

Check current GOV.UK guidance and HMRC compatible-software information for your own MTD obligations. You can also use LaunchKit's free MTD readiness check as a general planning aid; it is not filing software or tax advice.

For the customer-facing document side, read Essential business documents for UK window cleaners in 2026.

This article is general guidance, not tax advice. Check HMRC guidance and speak to a qualified accountant or tax adviser about your own position.