I hate it when IMG doctors lose thousands because of bad financial advice from random TikTokers who have no idea what they’re talking about!
Honestly, the next time I hear someone say this, I might scream:
“Don’t earn more! Your tax will go up, and your take-home will reduce.” 😩
That statement is complete nonsense, and yet, I’ve heard too many locum doctors cut back on work because of it.
This myth about the marginal tax rate for doctors has been circulating for years, stopping smart professionals from earning what they deserve. It makes absolutely no mathematical sense and reveals a deep misunderstanding of how income tax actually works.
If you want to cut work for lifestyle or family reasons, that’s perfectly fine and often a wise choice. But if you have the capacity, motivation, and opportunity to earn more, there’s no financial logic in holding back.
Let’s unpack the truth about marginal tax rates, what they really mean for doctors, and how to earn more without giving it all back to the taxman.
Understanding the Marginal Tax Rate for Doctors
Here’s the simple truth: you are not taxed on your entire income at the highest rate you reach.
The marginal tax rate only applies to the portion of your income that falls within each tax band — like filling a series of buckets, one at a time.
Think of it this way using UK 2025 tax bands:
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Personal Allowance: £0 – £12,570 → taxed at 0%
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Basic Rate: £12,571 – £50,270 → taxed at 20%
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Higher Rate: £50,271 – £125,140 → taxed at 40%
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Additional Rate: above £125,140 → taxed at 45%
If you earn £50,271, only that extra £1 is taxed at 40%. The rest (everything you earned in the lower bands) keeps its lower tax rate.
In other words, the marginal tax rate for doctors affects only the “top slice” of your income, not the entire pie.
Unfortunately, this crucial detail is often lost in translation on social media.
However, if you receive Child Benefit and have an income of up to £100,000, you are above the £80,000 threshold and will have to repay the full amount of the Child Benefit through the HICBC.
The 60% Tax Trap for High-Earning Medics
There’s one exception that confuses many, and it’s why some believe the myth.
Once your adjusted net income passes £100,000, your personal allowance begins to shrink by £1 for every £2 you earn over that threshold.
This creates the dreaded “60% tax trap” – an effective rate that can feel brutal, even though it’s temporary. Between £100,000 and £125,140, your take-home rises more slowly because you’re losing your tax-free allowance while paying higher tax.
But here’s the key insight:
You still take home more when you earn more. You just keep a smaller percentage of the increase.
The marginal tax rate for doctors may rise sharply in that band, but it never flips to negative; meaning your net income will never go down when your gross income goes up.
If you want a deeper breakdown of how tax thresholds and pension rules interact, check out Financial Planning for Doctors. It’s a great explainer for building efficient systems around your income.
Why This Myth Hurts Doctors Financially
This misconception isn’t just harmless chatter. It has real financial consequences.
Many doctors cut back on locum shifts or extra clinics because they think they’ll “lose” money to tax. But that’s simply not true.
By avoiding extra income, you lose out on:
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Higher savings capacity
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Greater pension contributions (and compounding growth)
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More flexibility to invest or pay off debt faster
In Financial Confidence for Doctors, I explain how small, consistent financial wins, not avoidance, are what build long-term independence.
If you are strategic about how you earn, save, and invest, your higher income can work harder for you, even in a complex tax environment.
How to Beat the Marginal Tax Rate System
Knowing how the marginal tax rate for doctors works means you can plan around it.
Here are a few simple strategies that can help you take home more of what you earn.
Optimise Pension Contributions 📈
If you’re earning above £100,000, consider increasing your pension contributions. This can reduce your adjusted net income and restore your personal allowance, effectively reversing part of the 60% trap.
Even modest adjustments to your NHS pension or SIPP can lead to big tax savings over time. I explain this more in The Moneywise Doctor Book: Navigating the Autumn Budget Storm.
Use Tax-Efficient Wrappers 💼
Maximise your ISA, LISA, and SIPP allowances. These wrappers protect growth and income from unnecessary taxation — letting you build wealth steadily even when tax rules shift.
This is part of the philosophy behind The Moneywise Doctor Book – Earning More Isn’t Enough for Medics, where we explore how structure and strategy matter more than hustle alone.
Separate Emotion from Tax Planning 💡
Many doctors make reactive financial choices because tax feels punitive. But effective planning is about staying calm, not fearful.
As we head into another Autumn Budget, remember: tax policies change overnight, but financial principles remain timeless. The right mindset and structure will always beat uncertainty.
For a step-by-step framework, read The Moneywise Doctor: Helping Medics Build Financial Freedom.
The Takeaway: Knowledge Beats Fear
Before you cut back on work based on what you heard online, run the numbers.
Understand your marginal tax rate and build a plan that works with, not against the system.
The truth is simple: you will always take home more when you earn more.
It may not always feel like it, especially when you cross tricky thresholds, but over time, those small gains compound into genuine financial freedom.
And if you want to go deeper, my upcoming book, The Moneywise Doctor, explores exactly how to balance earning potential, lifestyle, and tax efficiency without the guilt or confusion.
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