Published: June 2026 | Fact-Checked & Audited By: David Vance, CTA FCA (Chartered Tax Advisor & Accountant)
This guide is fully updated for the 2026/27 HMRC tax year. All calculations and tax rules have been audited against official UK legislation.
Workplace bonuses are a common feature of employment packages, but not all bonuses are structured in the same way. From a legal and tax perspective, bonuses generally fall into one of two categories: discretionary or contractual. The distinction between these two types of payments is critical, as it affects your employment rights, your employer’s obligations, and the timing of tax points (when tax becomes due to HMRC). For a precise analysis of your take-home pay, use our online Bonus Tax Calculator. In this guide, we look at the differences between discretionary and contractual bonuses, their National Insurance treatment, and the rules governing them in the 2026/27 tax year.
What is a Contractual Bonus?
A contractual bonus is a payment that you have a clear, legally binding right to receive under your employment contract, provided you meet specific, objective conditions. Examples include a commission structure based on sales targets, a percentage of company profits, or a guaranteed annual payment. If you achieve the agreed criteria, your employer is legally obligated to pay the bonus. Failure to pay a contractual bonus can constitute a breach of contract or an unlawful deduction from wages under employment law.
What is a Discretionary Bonus?
A discretionary bonus is a payment made at the sole discretion of your employer. The employment contract may state that the employer operates a bonus scheme, but the decision to pay a bonus, the amount, and the timing are entirely at their option. Even if your performance is outstanding, you have no automatic legal right to receive a payment. Employers often use discretionary bonuses to reward performance in strong business years without committing to fixed long-term costs.
The Tax Difference: The “Receipts” Rule and Tax Points
For most employees, both discretionary and contractual bonuses are taxed through the PAYE system as normal earnings. However, the legal distinction determines the “tax point” (when the earnings are deemed to be received for tax purposes). Under HMRC rules for directors and employees, earnings are treated as received at the earlier of:
- The date when a payment is actually made.
- The date when a person becomes legally entitled to require payment of the earnings.
For a **contractual bonus**, the tax point is the date the contractual entitlement arises (e.g., when the company accounts are finalized and the calculation is locked in), even if the physical payment is delayed. For a **discretionary bonus**, there is no legal entitlement until the employer formally decides to pay it. Therefore, the tax point is almost always the date the bonus is paid.
National Insurance Contribution Rules
Both types of bonuses are subject to Class 1 National Insurance Contributions (NICs). Because NICs are calculated per pay period, the timing of the bonus payment is crucial. If an employer pays several distinct bonuses in a single month, they are aggregated with your regular salary, which can push you past the Upper Earnings Limit and lower your employee NIC rate to 2% on the excess. If the bonuses are paid in separate months, they are assessed against each month’s limits independently. To estimate these deductions, use our online National Insurance Calculator.
| Feature | Contractual Bonus | Discretionary Bonus |
|---|---|---|
| Legal Entitlement | Yes, if conditions are met | No, entirely at employer’s option |
| Breach of Contract Risk | High, if unpaid | Low, unless discretion is exercised in bad faith |
| HMRC Tax Point | When entitlement is established | When paid or declared |
| PAYE & NIC Treatment | Subject to standard PAYE & Class 1 NICs | Subject to standard PAYE & Class 1 NICs |
Frequently Asked Questions: Discretionary vs. Contractual
1. What is a discretionary bonus under UK tax rules?
A discretionary bonus is a payment that your employer chooses to pay you without any prior contractual obligation. For tax purposes, it is processed through PAYE and subject to normal Income Tax and National Insurance when paid.
2. Is a contractual bonus taxed differently than a discretionary bonus?
No, both types of bonuses are subject to the same rates of Income Tax and National Insurance once they are paid. The only difference is the tax point, which is when you gain the legal right to the payment under your contract.
3. Can a discretionary bonus become contractual?
Yes, if an employer pays a discretionary bonus regularly and consistently over several years, it can become contractual through custom and practice. If this happens, employees may gain a legal expectation to receive the bonus in future years.
4. Are bonuses subject to National Insurance?
Yes, both discretionary and contractual bonuses are subject to Class 1 employee and employer National Insurance Contributions. They are added to your normal pay for the period and assessed against the relevant thresholds.
5. Can an employer refuse to pay a contractual bonus?
No, an employer cannot refuse to pay a contractual bonus if you have met all the conditions specified in your employment agreement. Doing so constitutes a breach of contract, and you can take legal action to recover the unpaid wages.
6. What is the tax point for a contractual bonus?
The tax point for a contractual bonus is the date on which you become legally entitled to the payment, even if the money is paid later. This can sometimes affect the tax year in which the bonus is assessed by HMRC.
7. How do I know if my bonus is discretionary or contractual?
You should review the wording of your employment contract or offer letter. If it uses phrases like “guaranteed,” “shall be entitled to,” or outlines specific target-based payouts, it is likely contractual; if it uses “may receive,” “at the company’s discretion,” or “non-binding,” it is discretionary.
8. Do company directors have different tax point rules for bonuses?
Yes, directors have special HMRC rules where the tax point is the date the bonus is determined or approved by the board. This prevents directors from deferring their personal tax liabilities by delaying the payment of their bonuses.
9. Can a discretionary bonus be sacrificed into a pension?
Yes, you can sacrifice a discretionary bonus into your pension, but the agreement must be signed before the employer formally decides to pay it. Once the employer declares the bonus, the entitlement is created and the sacrifice option is lost. Learn more in our guide to pension bonus sacrifice.
10. Does a discretionary bonus count towards my holiday pay calculation?
Historically, discretionary bonuses did not affect holiday pay, but modern employment law requires employers to include regular bonuses in the calculation of holiday pay. This ensures that employees do not face a financial penalty for taking annual leave.