(Or: Why Your Bonus Never Feels Quite as Big as You Expected…)
Ah, bonuses and commissions — the glittering unicorns of payroll.
You see the number, you get excited, you mentally spend it three times over… and then the payslip arrives.
Suddenly your glorious £2,000 bonus has transformed into something that looks suspiciously like £1,200 and a heartfelt apology.
What happened?
In short: tax.
Let’s break it down before anyone cries into their payslip.
🎁 Bonuses and Commissions = Normal Earnings
First things first: HMRC does not treat bonuses and commissions as special or separate.
There’s no fairy dust, no gentle tax treatment, no warm festive glow.
They are taxed exactly the same as normal wages:
✔ Income Tax
✔ National Insurance
✔ Student loans (if applicable)
✔ Pension contributions (if applicable)
If anything, HMRC sees a bonus and rubs its hands together.
🧮 Why Does It Look Like You’re Being Over-Taxed?
Here’s where the confusion usually kicks in.
Payroll software uses cumulative tax rules.
That means when you get a big one-off payment (like a bonus), HMRC assumes — temporarily — that you always earn that much.
So your tax code calculates as if your annual pay has suddenly skyrocketed.
Result?
A bigger chunk gets taken off in that payslip.
The good news:
👉 You’re not being over-taxed overall
👉 It usually corrects itself in future pay periods
👉 Any overpayment is automatically refunded through payroll
No forms. No phone calls. No arguments with HMRC required.
(Unless you like arguing with HMRC. No judgment.)
💷 National Insurance Loves a Bonus Too
Unlike income tax — which spreads out over the year — National Insurance is calculated per pay period.
So:
Bigger pay this month = bigger NI this month.
That’s why bonuses can feel like NI has taken a bigger-than-usual bite.
🤑 Pension and Student Loans May Apply
If the employee is enrolled in a pension scheme, the bonus may trigger pension deductions too.
Same goes for student loans — sadly, your bonus does not get you a break from paying back that English degree.
💼 The Commission Twist
Commission is treated exactly the same way as bonuses — it’s all taxable income.
Whether someone earns the same each month or swings wildly based on sales, HMRC still patiently waits for its share.
❤️ The Love Payroll Bit
Bonuses and commissions can be a real headache for employers and employees alike.
At Love Payroll, we:
✔ Run the numbers correctly
✔ Explain the tax impact clearly
✔ Make sure future payslips re-balance properly
✔ Ensure no one is actually overpaying in the long run
✔ Provide tissues and emotional support when staff see their net pay
Okay, maybe not the tissues — but we could.
Because nothing ruins the joy of a bonus like confusion on a payslip.
We make sure the calculations are right — and the explanations easy.
