Every business owner wants to pay the right amount of tax, not a penny more. Finding legitimate tax saving tips for businesses in the UK is not about loopholes or aggressive schemes; it is about knowing which allowances exist, using them before the deadlines pass, and making sure your business structure works in your favour.

We work with sole traders, limited companies, and growing businesses across the UK, and the opportunities we see most often missed are not obscure or complicated. Most of them are straightforward claims and elections that HMRC fully expects businesses to make. The issue is usually timing or awareness, not complexity.

With April 2026 bringing changes to capital allowances, Making Tax Digital for Income Tax going live, and the R&D regime settling into its merged structure, there is genuinely more to think about this year than in recent ones. Here is our current thinking on where to focus.

If your business is a limited company, the starting point for any tax planning conversation is your corporation tax rate. For the 2026/27 tax year, the small profits rate remains 19% on profits up to £50,000, the main rate is 25% on profits above £250,000, and marginal relief applies to profits between those two thresholds.

That marginal relief band is where thoughtful planning has the most impact. A company with profits of £150,000 pays an effective rate somewhere between 19% and 25%, and the precise figure depends on associated companies and other adjustments. Getting this right is not optional; it shapes every other decision you make about salary, dividends, pension contributions, and timing of expenditure.

The most common missed opportunity we see here is unplanned profit extraction. Directors who take no salary, or who draw everything as dividends without considering the corporation tax position first, often end up paying more combined tax than necessary. The numbers need to be modelled together, not treated as separate questions.

If you are approaching £50,000 in profits and considering a significant purchase, the timing of that expenditure can genuinely move the dial on which rate you pay. That is worth a conversation with your accountant before the year ends, not after.

Two changes to capital allowances came into effect in 2026 that every business investing in equipment or machinery should know about.

First, a new 40% first-year allowance for main rate plant and machinery assets was introduced from 1 January 2026. This allows businesses to deduct 40% of the cost of qualifying assets in the year of purchase, which is a meaningful improvement on the previous writing-down allowance rate.

Second, that writing-down allowance rate has itself been reduced. From April 2026, the main rate writing-down allowance for plant and machinery falls from 18% to 14%. For businesses that carry a pool of existing assets and claim the writing-down allowance rather than the Annual Investment Allowance (AIA), this is a reduction in the relief you can claim each year.

The Annual Investment Allowance remains at £1 million per year and still gives 100% first-year relief on qualifying capital expenditure. For most small and medium-sized businesses, the AIA covers everything they are likely to spend on equipment, so the pool rate reduction may have limited practical impact. But for larger businesses or those with significant existing pools, the timing of new purchases and the choice of allowance to claim both matter more than they did twelve months ago.

If you are planning a significant equipment purchase, it is worth reviewing which allowance applies and whether the timing needs adjusting.

For owner-managed limited companies, the most reliable tax saving approach remains a combination of a modest salary and dividends, structured to minimise the overall tax and National Insurance burden across the company and the individual.

For 2026/27, the personal allowance remains frozen at £12,570. Many directors take a salary around the National Insurance secondary threshold (£5,000 per year for 2026/27, though verify the current figure with your accountant as employer NI thresholds have been in motion), with dividends making up the balance of what they need to draw.

The dividend allowance has been reduced significantly in recent years and now stands at £500 for 2026/27. Above that, dividends are taxed at 8.75% (basic rate), 33.75% (higher rate), or 39.35% (additional rate). The reduction in the allowance means that even modest dividend income now generates a tax liability, so it is more important than before to plan the level of drawings carefully.

Pension contributions are worth considering alongside this. Employer contributions from the company are a legitimate business expense, they reduce the corporation tax bill, and they sit outside the dividend and salary structures entirely. We see a lot of director-shareholders who have not considered using pension contributions as part of their remuneration planning. It is a straightforward, fully HMRC-compliant approach that often reduces the overall tax position materially.

R&D tax relief has had a turbulent few years. The volume of SME scheme claims fell sharply in 2023/24, partly because HMRC has tightened compliance significantly and partly because many smaller claims were submitted without adequate documentation and were challenged or withdrawn.

Since August 2023, most businesses now claim under the merged R&D scheme, which offers a 20% RDEC (Research and Development Expenditure Credit) on qualifying expenditure. The rate is the same for most businesses, regardless of size, which simplifies the landscape compared to the old dual-track system.

The key message on R&D right now is this: if your business genuinely undertakes qualifying R&D activity, the relief is still substantial and worth claiming. But the days of broad, loosely documented claims are over. HMRC now requires detailed evidence of what scientific or technological uncertainty was being resolved, who was involved, what was spent, and how the project qualifies under the statutory definition.

If you have not claimed R&D relief before and are wondering whether your work might qualify, the test is narrower than many people assume. Writing software, developing a new product, or improving an existing process can qualify, but only where there is genuine uncertainty at the frontier of knowledge, not routine development work. A properly prepared claim with solid documentation is far more valuable than a rushed one that invites an enquiry.

Making Tax Digital for Income Tax (MTD for IT) went live in April 2026 for sole traders and landlords with qualifying income above £50,000. If you are in scope and have not yet moved to compliant software and quarterly reporting, you are already behind.

Under MTD for IT, affected businesses must keep digital records and submit quarterly updates to HMRC through compatible software, with a final declaration at the year end replacing the traditional Self Assessment return. The quarterly updates report income and expenses for the period; they are not tax calculations in themselves, but they need to be accurate.

From April 2027, the threshold drops to £30,000, bringing a significantly larger group of sole traders and landlords into scope. If you are currently below £50,000 but expect your income to grow, now is a sensible time to set up compliant bookkeeping rather than scrambling to comply at the last minute.

The practical implication is simple: if you are still using spreadsheets or paper records, those are not MTD-compliant. Moving to cloud accounting software such as Xero, QuickBooks, or FreeAgent is the straightforward solution, and it has the added benefit of giving you a much clearer picture of your finances throughout the year rather than only at year end.

Missing MTD obligations carries financial penalties, so this is not an area to defer.