UK small business owners face a more demanding tax landscape in 2026. The biggest immediate change is no longer theoretical: Making Tax Digital for Income Tax has started for many sole traders and landlords. At the same time, payroll costs, capital-allowance rules, business rates and the tax treatment of a future company sale all need fresh attention.
This is not simply a matter of knowing tax rates. The practical issue is timing. A business that uses the right records, software and payment routines can avoid rushed filings, interest charges and missed reliefs. A business that treats tax as an annual January task is now increasingly exposed to avoidable cost and disruption.
Below is SMEHype’s practical guide to the latest verified developments that UK small business owners should prioritise as at 4 August 2026. Tax is fact-specific, so use this as a planning checklist and take tailored advice before making decisions about remuneration, investment or a business exit.
Making Tax Digital for Income Tax is now live
The most important operational change for self-employed people and landlords is the rollout of Making Tax Digital for Income Tax, often called MTD for Income Tax. From 6 April 2026, it applies to individuals whose 2024–25 Self Assessment return showed qualifying income of more than £50,000 from self-employment and property.
Qualifying income means gross turnover and gross property income before expenses. It is not business profit, taxable profit or total personal income. That distinction matters. A consultant with £70,000 of turnover and £30,000 of allowable costs is within the first wave, even though profit is only £40,000. Equally, someone with a £48,000 salary and £45,000 of freelance turnover is not in the first wave solely because of their salary; the relevant MTD measure is income from self-employment and property.
The timetable is already set for the next groups:
- From 6 April 2026: qualifying income above £50,000, based on the 2024–25 return.
- From 6 April 2027: qualifying income above £30,000, based on the 2025–26 return.
- From 6 April 2028: qualifying income above £20,000, based on the 2026–27 return.
That means many owners who are not mandated today should still act now. If your turnover is moving towards £30,000 or £20,000, choosing compatible bookkeeping software, establishing a receipt-capture process and training the person who maintains the records will be easier before MTD becomes compulsory.
What MTD changes in day-to-day practice
Businesses in scope must keep digital records using compatible software and submit quarterly updates of business and property income and expenses to HMRC. The first quarterly update for the initial cohort, covering the first three months of the 2026–27 tax year, is due by 7 August 2026. HMRC has confirmed that the quarterly update is not a tax return; it is a summary of records submitted through recognised software.
The annual responsibility does not disappear. After the final quarterly update, the owner must make any necessary adjustments, include other income and submit the annual return through software. The usual deadline to file and pay remains 31 January following the end of the tax year. In other words, quarterly reporting creates a new compliance rhythm; it does not create four tax payments a year or replace the final Self Assessment return.
There is a useful first-year concession: HMRC says it will not issue late-submission penalty points for late quarterly updates in 2026–27. That should not be read as a reason to delay. Late Self Assessment return and late-payment penalties still apply, and the penalty-point regime is expected to bite from the second year. Read HMRC’s current quarterly-update guidance and make sure your software can submit both updates and the end-of-year return.
A simple MTD preparation plan
- Check the right number: look at gross self-employment and property income on your latest filed return, not profit or salary.
- Separate bank activity: use a dedicated business account where possible, then reconcile it frequently.
- Digitise evidence promptly: record sales, purchases and receipts when they happen rather than reconstructing them at quarter-end.
- Test software before a deadline: confirm that your chosen product is HMRC-recognised and that your accountant has access if they will file for you.
- Set a monthly tax review: monitor profit, VAT, payroll and cash reserved for tax; quarterly updates will be far less painful.
Landlords with a side business need particular care. The income streams are combined for the qualifying-income test, yet records still need to identify the relevant self-employment and property activity properly. Owners with more complex arrangements, digital-exclusion concerns or partnership interests should check the exemptions and rules with an adviser rather than assuming the headline threshold tells the whole story.
Payroll costs: the 2026–27 National Insurance position
For employers, the core Class 1 employer National Insurance rate remains 15% in 2026–27. Employer contributions start once earnings exceed the secondary threshold, currently £417 a month, or £5,000 a year. This needs to be built into every recruitment, pay-rise and contractor-versus-employee budget.
For an employee paid £30,000 a year, the employer’s National Insurance is broadly 15% of £25,000, which is £3,750 before any relief or special category applies. That is not a payroll technicality; it is a direct employment cost that should sit alongside salary, pension contributions, holiday cover, equipment and training when pricing work or hiring staff.
Employees generally pay Class 1 National Insurance at 8% between the £12,570 primary threshold and £50,270 upper earnings limit, then 2% above that. The official 2026–27 employer rates and thresholds also set out the different income-tax bands for England, Northern Ireland, Wales and Scotland. Scottish employee income-tax rates differ, so payroll settings and remuneration discussions should not assume an England-and-Wales calculation applies to every team member.
Employment Allowance remains important
Eligible employers can claim up to £10,500 of Employment Allowance in 2026–27 against their employer National Insurance liability. For a small company with a modest payroll, that can remove a large share of the annual cost. The allowance is generally claimed through payroll software, but eligibility conditions apply and connected companies can only claim one allowance between them. Check that the payroll provider has made the claim and that the business has not overlooked a change in group or ownership circumstances.
For sole traders, Class 4 National Insurance remains 6% on profits between £12,570 and £50,270 and 2% above that. Compulsory Class 2 contributions have been abolished, but people with lower profits may choose to make voluntary Class 2 payments to protect entitlement to contributory benefits. The small-profits threshold is £7,105 for 2026–27 and the voluntary rate is £3.65 a week. HMRC’s National Insurance guide explains the current rules, but consider checking your National Insurance record before paying voluntarily.
Company tax: protect cash flow and review capital spending
The Corporation Tax framework remains familiar, but it is still easy to budget incorrectly. The small-profits rate is 19% for companies with profits of £50,000 or less, the main rate is 25% for profits above £250,000, and marginal relief may apply between those limits. The thresholds are reduced where companies have associated companies or accounting periods shorter than 12 months, so a fast-growing group cannot automatically rely on the £50,000 and £250,000 headline figures.
For owner-managed businesses, do not confuse a company’s cash balance with taxable profit. A large corporation-tax payment can follow a profitable year even when cash has been spent on stock, debtors, loan repayments or capital investment. Forecast corporation tax monthly, reserve cash in a separate account and note the payment deadline: normally nine months and one day after the end of the accounting period. Your accountant should also flag whether quarterly instalment-payment rules could apply as the business grows.
Capital allowances changed from April 2026
Businesses investing in equipment need to revisit the timing and classification of expenditure. A new 40% first-year allowance applies to qualifying main-rate plant and machinery expenditure incurred from 1 January 2026. However, the main-rate writing-down allowance has fallen from 18% to 14% from 1 April 2026 for Corporation Tax and from 6 April 2026 for Income Tax.
The practical message is not simply “buy assets sooner”. First check whether the Annual Investment Allowance gives a better result. It remains at £1 million and can provide 100% relief for qualifying plant and machinery, subject to conditions. Companies may also have access to full expensing for qualifying new main-rate assets. The changed writing-down rate matters most where expenditure does not qualify for an immediate allowance or where the business has already used available allowances.
Before committing to a van, machinery, IT system or equipment lease, ask for a tax treatment comparison. Is it an outright purchase, hire purchase, operating lease or finance lease? Is the asset new or second-hand? Does it qualify for the Annual Investment Allowance, full expensing, the 40% allowance or only writing-down allowances? The HMRC policy note on the new first-year allowance is a useful starting point, but professional advice can prevent a purchase being structured on the wrong assumption.
VAT: watch the rolling threshold, not only year-end turnover
The VAT registration threshold remains £90,000 of taxable turnover. Registration becomes compulsory when taxable turnover for the preceding 12 months exceeds £90,000, or when you expect taxable turnover in the next 30 days alone to exceed it. This is a rolling calculation, not a test performed only at the accounting year-end.
For example, an events business may have turnover of £82,000 at the end of June, then win a £12,000 taxable contract in July. If the rolling 12-month total then exceeds £90,000, it must deal with the registration requirement promptly. Waiting until annual accounts are completed could mean a late registration and an unexpected VAT liability that the business cannot retrospectively recover from customers.
Review taxable turnover every month, particularly if sales are seasonal or a large order is likely. Exempt income and outside-the-scope income are treated differently, so use an accountant’s input where the classification is unclear. The official VAT registration guidance sets out the tests and registration timing. Voluntary registration below the threshold can make commercial sense where customers are VAT-registered businesses and input VAT is material, but it can raise prices or reduce margin for consumer-facing firms.
Construction firms: nil CIS returns are back on the agenda
Construction Industry Scheme contractors should ensure monthly compliance routines are active again. From April 2026, contractors are once more legally required to file a CIS return every month, including a nil return when no subcontractor payments have been made. An alternative is to make an inactivity request if subcontractors will not be used temporarily.
Returns are due by the 19th of the month following the relevant tax month. Missing returns can trigger penalties, while incorrect declarations of employment status can be particularly costly. Do not let an inactive period create a string of overlooked returns. Put a recurring diary date in place and make responsibility clear between the director, bookkeeper, payroll team and accountant. HMRC’s CIS monthly-return guidance explains the filing requirement and penalties.
Business rates changed in England on 1 April 2026
Business rates are devolved, so this section is specifically for businesses with premises in England. The 2026 revaluation and new multipliers mean retailers, hospitality businesses and leisure operators should examine their latest bill rather than assuming last year’s relief continues in the same form.
The temporary retail, hospitality and leisure discount has been replaced by lower retail, hospitality and leisure multipliers for qualifying occupied properties with rateable values below £500,000. For 2026–27, the small-business retail, hospitality and leisure multiplier is 38.2p for rateable values below £51,000, while the standard retail, hospitality and leisure multiplier is 43p for rateable values from £51,000 to £499,999.
The lower multiplier is welcome, but a changed rateable value can still increase a bill. If a business has lost some or all of small business, rural or retail, hospitality and leisure support because of the revaluation, it may qualify for Supporting Small Business relief. This can cap increases, subject to the rules. Check the Supporting Small Business relief guidance, compare the new bill with the previous one and challenge the property details where they are wrong. Do not confuse rateable value with the rent you actually pay.
Plan earlier for a sale, dividend extraction and benefits
A business sale is often planned years after the structure that affects its tax outcome was put in place. In 2026–27, the rate of Business Asset Disposal Relief is 18%, up from 14% in 2025–26. The £1 million lifetime limit on qualifying gains remains. The rate is scheduled to rise again to 24% from 6 April 2027, making early exit planning more valuable for owners who may sell, transfer shares or wind down a trading company.
This does not mean rushing into a sale for tax reasons. It does mean reviewing eligibility well before heads of terms: trading status, ownership period, voting rights, employment or officer status, group structure and the nature of company assets can all matter. The Business Asset Disposal Relief rules should be reviewed with a specialist adviser before a transaction is underway.
Dividend planning also deserves a forward look. Dividend tax rates are due to increase from 6 April 2027 for basic-rate and higher-rate taxpayers, while the dividend allowance remains small. Owners should avoid simplistic “salary versus dividends” rules. The best mix depends on profits, personal income, pension contributions, employer National Insurance, available distributable reserves, mortgage needs and the company’s investment plans.
Finally, employers that provide benefits should prepare for the phased mandatory payrolling of benefits in kind. From 6 April 2027, company cars, car fuel, vans, van fuel and medical benefits will be in scope; most other benefits are expected to follow from April 2028. Use 2026–27 to audit benefits, confirm payroll-software capability and clean up employee data. HMRC’s latest update on mandatory payrolling sets out the phased approach.
Turn tax compliance into a management routine
The common theme across these developments is that tax administration is becoming more real-time, more data-led and less forgiving of a once-a-year scramble. MTD requires regular digital records. VAT registration depends on a rolling figure. CIS reporting is monthly. Payroll tax is due as wages are paid. Corporation tax needs cash planning long before the payment deadline.
Set a monthly finance meeting, even if you are the only person in the business. Review sales, costs, VAT turnover, payroll, tax reserves, upcoming asset purchases and filing dates. Ask your accountant for a short written action plan that identifies MTD readiness, VAT risk, Employment Allowance eligibility, capital-allowance opportunities and any exit-planning exposure. And pay tax liabilities on time: HMRC’s current late-payment interest rate is 7.75%, with interest running while an amount remains outstanding, as shown in its interest-rate guidance.
The action for SMEHype readers is clear: do not wait for the next return deadline. Check whether MTD already applies, test your records and software, review payroll and VAT thresholds, and book an adviser meeting before your next major investment, hiring decision or share transaction. Good tax management is now a practical advantage, not an annual compliance chore.
