Corporation Tax Planning for UK Directors: Salary vs Dividends and Payment Deadlines

Most company directors pay themselves twice: a salary through payroll, and dividends from the company's profits. The split you choose affects two tax bills at once — the company's corporation tax and your own income tax — and the two rarely pull in the same direction.

Salary reduces taxable profit. Dividends come out of profit that has already been taxed. That is the tension in a sentence. Getting it right means looking at the company's numbers and your household's numbers together, then revisiting the mix as profits move.

How corporation tax sets the backdrop

Corporation tax is charged on the company's profits, not on what you draw out. So the first job is a realistic profit forecast, before directors' pay.

The rate depends on the level of profit. Companies with profits up to the small profits threshold pay the small profits rate of 19%. Above the upper limit, the main rate of 25% applies. In between, marginal relief applies, producing an effective marginal rate of 26.5% on each extra pound of profit in that band. Those limits are divided by the number of associated companies, so if you run more than one trading company — or a dormant one sitting alongside your trading company — your bands shrink and you may reach the main rate far sooner than the headline figures suggest.

That marginal band matters enormously to directors. Inside it, an extra £1,000 of profit retained in the company can cost 26.5p in corporation tax, while paying the same £1,000 out as salary avoids that charge but attracts employer and employee National Insurance instead. The arithmetic is close, and it flips depending on your personal tax position, your other income, and whether the company can claim the Employment Allowance.

Corporation tax is a tax on the company's profit. Directors' pay is a decision about where that profit should land — and both sides of that decision carry a price.

The salary side of the equation

Salary is the only form of pay that is deductible for corporation tax. Every £1 of salary reduces taxable profit, so the company saves tax at its marginal rate — and the employer NIC charged on that salary is deductible too, a point that is often overlooked when directors run a rough comparison.

The costs, though, are real and immediate:

• Employer National Insurance is charged on earnings above the secondary threshold, and the threshold is low enough that even a modest director's salary triggers it.
• Employee National Insurance comes out of your gross pay before you see it, at the main rate on earnings between the primary threshold and the upper earnings limit, and a lower rate above that.
• Income tax applies through PAYE once pay exceeds your personal allowance, at 20%, 40% or 45% depending on total income.
• Payroll administration — RTI reporting on or before each payday, pension auto-enrolment duties, and a P11D or payrolling for any benefits in kind.

Most directors aim for a salary that uses the personal allowance without triggering income tax, and that keeps employer NIC at a manageable level. The exact figure depends on the thresholds in force, whether the Employment Allowance is available to the company, whether you have another job, and whether you need the salary to qualify for the state pension. It is worth recalculating every April rather than carrying over last year's number out of habit.

A note on the Employment Allowance

If the company qualifies for the Employment Allowance, employer NIC on a director-only payroll may be largely or fully covered. Where that is the case, a salary up to the personal allowance becomes considerably more attractive, because the employer cost effectively disappears. Where the allowance is not available — for example, because the company does not meet the conditions, or because it is a single-director company excluded from the relief — the employer NIC bill has to be counted honestly against the corporation tax saved.

The dividend side of the equation

Dividends are paid out of profits that have already suffered corporation tax. They are not deductible. That is precisely why the headline dividend tax rates look gentler than salary rates: you are looking at the second layer of tax, not the only layer.

Three things govern the dividend bill:

1. The dividend allowance — a small tax-free slice of dividend income, which has been reduced several times in recent years and is now modest.
2. Your marginal band — dividends sit on top of your other income, so salary, rental profit and interest all push dividends up into higher rates.
3. Distributable reserves — dividends can only be paid from profits available for distribution, supported by properly prepared accounts and a paper trail.

Dividend rates rise with your marginal band, and the jump between basic rate and higher rate dividend tax is wide. A director whose salary already fills the basic rate band will pay higher rate dividend tax on almost every pound drawn. That is the point at which the salary-versus-dividend calculation changes shape entirely — and it is why two directors with identical company profits can end up with very different personal tax bills.

Timing and paperwork

Dividends can be declared at any time, but they must be properly documented. A short board minute recording the date, the amount, the recipient and the fact that distributable profits exist is enough for most owner-managed companies. Skipping that step is a common reason HMRC recharacterises a dividend as salary, with the PAYE and NIC consequences that follow, plus interest and penalties.

Timing matters for another reason. If you expect profits to rise, taking dividends in the current tax year rather than the next may keep them out of a higher band. If you expect to stop working or drop to a lower income, pushing dividends into that later year can be cheaper. Neither trick changes the total profit, only the rate applied to it.

Building a workable mix

There is no single correct split, but there is a sensible order of work:

1. Forecast company profit before directors' pay for the accounting period.
2. Check how many associated companies you have, and where the corporation tax bands therefore fall.
3. Estimate your personal income from all sources for the tax year, including interest, rent and any second employment.
4. Set a salary that meets your NIC record, pension and mortgage criteria without waste.
5. Fill the remaining personal allowance and basic rate band with dividends where company cash allows.
6. Leave enough profit in the company to cover the tax bill, working capital and any planned investment.

Do this with a spreadsheet that models both taxes at once. A change of £5,000 in salary moves three or four numbers — corporation tax, employer NIC, employee NIC and income tax — and the interaction is what matters, not any single line.

Payment deadlines that catch directors out

Cash flow problems rarely come from the tax rate. They come from the date.

• Corporation tax: due nine months and one day after the end of the accounting period. A 31 March year end means a payment date of 1 January, right in the middle of the festive shutdown.
• Quarterly instalments: larger companies pay their corporation tax in instalments during the year rather than in one lump. The thresholds are divided by the number of associated companies, so a group can cross into instalments sooner than expected.
• PAYE and NIC: electronic payments by the 22nd of the following month, or the 19th if paying by post. Late payment attracts interest from day one.
• Class 1A NIC on benefits: due by 22 July following the end of the tax year, alongside the P11D deadline of 6 July.
• Self Assessment: 31 January for the balancing payment and first payment on account, and 31 July for the second. Dividend tax is collected here — there is no PAYE equivalent for dividends, so nothing is paid at source.
• Accounts and confirmation statement: Companies House accounts are due nine months after the period end for a private company, and the confirmation statement is annual and easy to forget.

Put every one of those dates into a single calendar and set reminders at least a month ahead. The tax itself is planned; the deadline is what catches people.

A worked sketch

Suppose a company expects £120,000 of profit before the director takes anything, and the director has no other income. A common approach is a salary set to use the personal allowance, with the remainder taken as dividends across the tax year rather than in one lump. The company saves corporation tax on the salary and the employer NIC, the director pays little or no income tax on that salary, and the dividends are taxed at the dividend rates applying to the basic and higher bands.

Under that structure a substantial slice of the £120,000 still ends up with HMRC — but noticeably less than if the whole amount were paid as salary, and noticeably less than if none of it had been deductible at all. The salary does part of the work; the dividends do the rest.

Change one variable — a second job, a spouse who is also a shareholder, a large pension contribution, or profits that push the company into the marginal relief band — and the ideal split moves. That is not a flaw in the method. It is the method.

Review, don't set and forget

Directors' pay is not a one-off decision. Profits move, thresholds change at each Budget, and personal circumstances shift when you buy a house, take on a mortgage, have children or approach pension age. A mix that was efficient two years ago may now be quietly costing you four figures a year.

An annual review — before the year end, not after — gives you room to adjust salary, declare dividends and make pension contributions while the choices still matter. Check your figures against the rates and thresholds currently in force, take advice where your numbers are large or unusual, and keep the paperwork that proves what you did and why.

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