Making Tax Digital for dog groomers: what's changing in April 2026

TL;DR: Making Tax Digital for Income Tax (MTD ITSA) hits self-employed dog groomers in three waves, based on qualifying income from self-employment and/or property: over £50,000 from 6 April 2026, over £30,000 from 6 April 2027, over £20,000 from 6 April 2028. Three things change for your business: digital records (paper-only records are not enough; the required records must also be created and kept digitally by the relevant update deadline), four quarterly updates per tax year (plus a Self Assessment tax return using compatible software), and compatible software to send the quarterly updates and submit the tax return. The time required varies with transaction volume, record quality and the software you use; the continuing duty is to keep accurate digital records and check the software-generated update. The shift is the rhythm: from a once-a-year January scramble to a four-times-a-year discipline.

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 UK dog grooming business, whether mobile, salon-based, or working from home, the headline news is short. MTD ITSA becomes mandatory in three steps, based on qualifying income from self-employment and/or property:

• From 6 April 2026 — qualifying income over £50,000.
• From 6 April 2027 — qualifying income over £30,000.
• From 6 April 2028 — qualifying income over £20,000.

That will catch many established sole-trader groomers, especially those running a busy book across grooming, daycare, and retail. If you also rent out a property, that rental income counts toward the same threshold.

The three real changes:

1. Digital records are required. Create and keep the required income and expense records in a structured digital format by the relevant update deadline. A spreadsheet can work when compatible software preserves the required digital links and can send the quarterly updates and tax return. Some cloud accounting software can handle both record keeping and filing; check HMRC's current compatible-software list and the provider's supported features. Paper or unstructured records can still be kept, but they are not enough on their own once MTD applies; the required records must also be created and kept digitally by the relevant deadline.
2. Four quarterly updates per tax year, plus your Self Assessment tax return using compatible software. Each update contains cumulative totals for the categories you use, from the start of the tax year to the update-period end. You make the relevant adjustments and complete the tax calculation when you prepare and submit your Self Assessment tax return using compatible software.
3. compatible software for the quarterly updates. MTD for Income Tax updates and the tax return must be sent through compatible software. You need either a cloud accounting tool that handles the submission natively, or a spreadsheet paired with compatible bridging software that supports the workbook and a permitted digital link.

Three changes. The rest is operational discipline.

Worth saying plainly: MTD does not change the underlying tax rules. A quarterly update can produce an estimate, but it is not a final tax calculation: adjustments and the final liability are dealt with through the tax return.

Review your existing workflow against HMRC's digital-record and compatible-software requirements. Keep useful invoicing, expense and mileage habits, then close any gap in structured digital records and permitted digital links.

The groomers who'll find this hardest are the ones currently running on a paper diary and a "give the lot to the accountant in January" approach. That annual-only approach is not enough once MTD applies because the required digital records must exist by each update deadline. Your accountant cannot submit a quarterly update if you've handed them nothing for the quarter.

Practical move for the next 30 days: get every business transaction running through a separate business bank account. Set a 15-minute weekly admin slot (Sunday evening works for most groomers, after the last appointment, kettle on, dogs settled) to log appointments, retail sales, supplies, and any boarding or daycare income against the right categories. That single habit takes you most of the way.

A quarterly update is not a tax return. It contains cumulative category totals from the start of the tax year to the update-period end. For a dog groomer, useful internal tracking categories include the following; your filing software should map them to the HMRC fields required for your income source and turnover:

Cumulative income to this update-period end: grooming services (full groom, bath-and-tidy, hand-strip, breed-specific styles), add-ons (nail clipping, ear cleaning, anal-gland expression, teeth brushing, de-shedding), daycare or boarding income if you offer it, retail product sales (shampoos, conditioners, brushes, treats, accessories), and any one-off services like puppy familiarisation sessions.

Total expenses by category: professional grooming products (shampoos, conditioners, ear cleaner, dematting solution, fragrance), equipment and consumables (clipper blades, scissors, brushes, towels, dryers, table covers, grooming nooses), van running costs and fuel if you're mobile, premises rent or use-of-home, utilities, professional liability insurance, dog-handling and pet-first-aid CPD, professional memberships (BDGA, iPET Network, Pet Industry Federation), accountancy, bank charges, software (booking apps like Pawfinity, Setmore, GroomerPro), phone, workwear and PPE.

You don't reconcile each line at the quarterly stage. Your software sends cumulative category totals from the start of the tax year to the update-period end. You make the relevant adjustments and complete the tax calculation when you prepare and submit your Self Assessment tax return using compatible software.

When your records are current, compatible software can calculate the update for you to check. Each update is cumulative from the start of the tax year to the end of the update period. If record keeping and filing use different software, transfer the records through a permitted digital link such as linked cells, CSV import/export or an API; manual re-keying or clipboard transfer is not a digital link.

VAT MTD has been mandatory since 2019. Most sole-trader groomers run below the £90,000 VAT threshold and aren't affected by VAT MTD. If you are VAT-registered (a busy multi-groomer salon might be), you've already been doing quarterly digital VAT submissions, and ITSA MTD layers on top as a separate filing.

Cash payments are the area HMRC scrutinises most heavily for any cash-frequent business, and dog grooming is on that list. Every cash groom needs a record at the moment of payment, not reconstructed at month-end. A simple appointment-book column for "paid cash / paid card / paid bank transfer" is enough, as long as it's consistently filled in. If you accept tips on top of the groom price, those should be tracked too.

There are three legitimate routes. Each has a real fit and a real cost. Pick once, commit, and stop second-guessing.

Cloud accounting software. Prices and features change. Check HMRC's compatible-software list and confirm the provider's current support for MTD Income Tax, bank feeds, invoicing and any payroll or CIS features you need. Best fit: VAT-registered groomers, salon owners with employed groomers, or anyone with a high transaction volume across grooming, daycare, and retail.

Spreadsheet plus bridging software. The spreadsheet is your record of income and expenses; compatible bridging software that supports the workbook and a permitted digital link reads the spreadsheet and submits to HMRC in the format MTD requires. Best fit: sole-trader groomers (mobile or salon) with relatively simple finances and a preference for one-time purchases over monthly subscriptions.

Hand it to your accountant. They handle the quarterly updates on your behalf. Costs more than DIY, but if your accountant already does your year-end, the marginal cost is manageable. The catch: they can only file what you give them. Quarterly cadence still requires you to maintain the records weekly.

There's no "best" answer. The right choice depends on your transaction volume, your tech comfort, and what you already pay for.

If you are required to use MTD and your records are not yet digital, act now: bring them up to date from the date HMRC says your digital records must start, choose compatible software and check your current update deadlines.

1. Open a separate business bank account if you don't already have one. Move all grooming income, retail sales, and supplier spend through it. Every other MTD step gets easier when business spend stops mixing with personal.
2. Pick one tool (spreadsheet plus bridging, cloud accounting, or your accountant) and commit. Set it up properly with the right categories for grooming work.
3. Start a 15-minute weekly admin slot. Sunday evening, last dog gone, kettle on. Log the week's grooms, retail, supplies, and any daycare income.
4. If you're VAT-registered, layer ITSA MTD onto your existing quarterly rhythm. Same month-end discipline, second submission.
5. If you're not VAT-registered (most groomers aren't), build the rhythm now. Check HMRC's current update periods and deadlines for the tax year in which you must join.

If you do nothing else this month: the bank account split. Everything cascades from that one decision.

For the wider weekly habit applied across every UK trade, see keeping your business expenses HMRC-ready in 15 minutes a week. Same discipline, different desk.

Check current GOV.UK guidance and HMRC compatible-software information for your own MTD obligations.

The time required varies with transaction volume, record quality and the software you use; the continuing duty is to keep accurate digital records and check the software-generated update. If you want full cloud accounting instead, that's a different decision and we'd say so plainly. Either way, the worst route is no route.

The kit pairs with the dog grooming business documents bundle (£19.99) if you also want client intake forms, dog handling consent records, cancellation policies, and grooming service contracts with the right MTD-friendly categories built in.

This article is general guidance, not tax advice. For your specific tax position, consult a qualified accountant or tax adviser.