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Payroll: A Big Win for Saving Corporation Tax

Writer: Jason Short
Jason Short
Sep 9
6 min read

A limited company can make a profit on paper while its director has very little left to spend personally. That is why payroll deserves more attention than simply being a monthly admin task. Payroll: a big win for saving corporation tax can be true when it is planned properly, because a salary paid through the business is usually an allowable expense that reduces taxable profit.

For owner-managed companies, the right salary is rarely about choosing the biggest possible figure. It is about finding a sensible balance between corporation tax, National Insurance, personal tax, dividends, pension contributions and the money the business needs to keep trading. Get that balance wrong and you may pay more tax than necessary, or create an avoidable HMRC compliance problem.

Why payroll can reduce your corporation tax bill

Corporation tax is charged on your company’s taxable profits. Most genuine business costs reduce those profits, and that includes salaries, employer’s National Insurance contributions and workplace pension contributions where they apply.

If your company pays you a salary of £12,000, subject to the normal rules and correct reporting, that £12,000 is generally deducted before corporation tax is calculated. The company’s taxable profit is therefore lower than it would have been if no salary had been paid.

The tax saving depends on the corporation tax rate applying to your company. A company paying tax at 19% saves £1,900 of corporation tax for every £10,000 of allowable costs. At 25%, the saving is £2,500. The position can be more complicated where profits fall between the small profits and main rate thresholds, because marginal relief may apply. This is exactly why a one-size-fits-all salary figure can be misleading.

The key point is straightforward: money paid as a properly run salary is not just money leaving the company. It may also reduce the profit on which corporation tax is charged.

Payroll is not the same as taking dividends

Many directors take a combination of salary and dividends. Both can be useful, but they are taxed differently.

A salary is paid through PAYE payroll. It is normally an expense of the company, so it can reduce corporation tax. Dividends are paid from profits after corporation tax. They do not reduce the company’s corporation tax bill.

That does not mean salary is always better than dividends. A higher salary may bring income tax and employee’s National Insurance into play. It may also create employer’s National Insurance for the company. Dividends can be tax-efficient in the right circumstances, but they must be supported by distributable profits and properly documented. Taking dividends when the company has not made sufficient available profit can cause serious issues later.

For many single-director companies, a carefully chosen salary plus dividends remains a practical approach. The best split depends on the director’s other income, age, available tax allowances, whether the company employs anyone else, and its expected profit for the year.

A salary can protect National Insurance entitlement

Payroll has a value beyond the immediate corporation tax calculation. Paying a salary at an appropriate level may help a director build a qualifying year for State Pension purposes, even where little or no employee’s National Insurance is due.

This matters particularly for business owners who have spent years focused on keeping costs down. Saving a small amount of tax now is not always a good result if it leaves gaps in your National Insurance record that affect your future entitlement. The correct salary level should consider both current cash flow and longer-term position.

When employer’s National Insurance changes the calculation

Employer’s National Insurance is one of the biggest reasons not to copy a salary figure from a friend, social media post or old article. Thresholds and rates change, and your company’s circumstances matter.

If your salary goes above the relevant employer’s National Insurance threshold, the company may have an additional liability. That cost is generally deductible for corporation tax, but it is still a real cash cost. A larger salary can therefore reduce corporation tax while increasing the PAYE and National Insurance bill that needs paying to HMRC.

Employment Allowance can reduce employer’s National Insurance for eligible businesses. However, not every company can claim it. A company where the only employee is also a director may be excluded, while a company with other qualifying employees may be able to benefit. Construction firms, transport businesses and growing local companies with staff should check this carefully rather than assuming the allowance applies.

Payroll: a big win for saving corporation tax, if it is real

HMRC expects payroll to reflect genuine work and genuine payments. A director’s salary should be authorised, recorded and paid or properly credited to their director’s loan account. It should not be added at year end simply because the company needs another expense to reduce tax.

For employees, the company must also meet its wider obligations. That means checking employment status, paying at least the National Minimum Wage where it applies, operating PAYE correctly, assessing workplace pension duties and keeping proper records. CIS subcontractors and businesses using casual labour need to be especially careful here. Calling someone self-employed does not settle their employment status for tax purposes.

Running payroll properly includes submitting Full Payment Submissions to HMRC on or before payday. Even a company with one director may need to report through Real Time Information. Missed filings, late payments and inaccurate figures can lead to penalties and unnecessary correspondence from HMRC.

Good payroll is therefore not a paper exercise. It is evidence that the company is treating remuneration properly, paying the right taxes at the right time, and claiming genuine deductions in its corporation tax return.

A practical example for a small limited company

Imagine a company with £70,000 of income and £30,000 of other allowable business costs. Before paying the director, it has £40,000 of profit.

If it pays a £12,000 salary that is correctly processed through payroll, the taxable profit may fall to £28,000 before considering any employer’s National Insurance or other deductions. If there is employer’s National Insurance, that may reduce the taxable profit further, although it also increases the company’s PAYE bill.

The director may then choose to take further money as dividends, provided the company has enough distributable profit after accounting for corporation tax and all other commitments. Alternatively, the director may leave profits in the company for a future vehicle, equipment, tax payment or working capital.

That last point matters. A tax-efficient plan that leaves the company short of cash is not a good plan. Black cab drivers replacing a vehicle, builders funding materials, and landlords facing repairs all know that money can be needed quickly. Tax planning should support the way the business actually operates.

Do not overlook pension contributions

For some directors, employer pension contributions are worth considering alongside salary and dividends. A qualifying employer contribution is usually an allowable company expense, which can reduce corporation tax, while helping the director build retirement savings.

Unlike salary, an employer pension contribution does not normally attract employer’s or employee’s National Insurance. However, pension annual allowances, total earnings, available company cash and access to funds all need consideration. Pension money is not available for next month’s household bills, so it suits directors who can afford to put money aside.

It can be particularly useful in a profitable year where the company has surplus cash, but it should be agreed before the year end and paid correctly. Leaving everything until the accounts are due often means fewer options.

Keep payroll and accounts talking to each other

A common small-company problem is that payroll, bookkeeping and the director’s loan account are handled separately. The payroll shows one figure, bank payments show another, and the accounts are left trying to make sense of it months later.

Keeping these records aligned makes corporation tax planning far easier. Your bookkeeper or accountant can see the company’s running profit, expected PAYE liabilities, dividends already taken and the cash available. That gives you time to adjust rather than relying on a last-minute calculation after the financial year has ended.

For businesses with staff, regular payroll also gives a clearer view of the true cost of each employee. Gross pay is only part of the picture. Employer’s National Insurance, pension contributions, holiday pay, overtime and payroll administration all affect profit and cash flow.

Make the decision before the year end

The best time to review director salary is before your accounting year end, not when the corporation tax return is being prepared. By then, the figures are largely fixed and the company may already have paid money in a way that is difficult to correct.

A sensible review considers expected profit, other personal income, dividends taken, pension plans, National Insurance record, available cash and any upcoming business costs. It should also consider whether your company has associated companies, as this can affect the corporation tax thresholds available to it.

At Short And Sons Accountants, we see the strongest results when payroll is treated as part of the wider tax plan, not an isolated monthly chore. The right arrangement can reduce corporation tax, maintain compliance and give you a clearer idea of what you can safely take from the business.

Before your next year end, take a look at how you are paying yourself. A short review now can give you more control over your tax, your records and the cash your company needs to keep moving.

 
 
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