One of the most common questions we hear from new clients — whether they’re employees, contractors, or directors of a limited company — is some version of: “I earn X, so why do I only take home Y?” The gap between a gross salary and actual net pay trips people up constantly, and it’s not always because the maths is complicated. It’s because most people don’t realise how many variables affect the final figure.

If you’re trying to work out take home pay accurately, a basic online calculator will only get you so far. It’ll handle income tax and National Insurance well enough — but it won’t know about your pension contributions, student loan, whether you’re paid through an umbrella company, or whether some of your income comes from dividends. Each of those changes the answer, sometimes significantly.

In this post we’ll walk through how the deductions actually stack up, what’s changed for the 2026 to 2027 tax year, and why the structure you use to pay yourself matters just as much as the headline figure.

Your gross pay is simply what you earn before anything is deducted. Take-home pay — sometimes called net pay — is what lands in your bank account after HMRC and any other obligatory deductions have been applied.

For most employees in the UK, the main deductions are:

• Income tax — calculated on earnings above the Personal Allowance (£12,570 for 2026/27). The basic rate is 20% on earnings up to £50,270, then 40% on anything above that threshold up to £125,140.
• Employee National Insurance contributions — 8% on earnings between £12,570 and £50,270, and 2% above that.
• Pension contributions — if you’re enrolled in a workplace pension, your contributions come straight out of pay before it reaches you.
• Student loan repayments — if applicable, deducted automatically depending on your plan type.

What many people forget is that the Personal Allowance starts tapering away once income exceeds £100,000 — at a rate of £1 for every £2 earned above that level. By £125,140 the allowance is gone entirely, creating an effective 60% marginal rate for earnings in that band. A basic salary calculator won’t always flag this.

GOV.UK’s income tax estimator covers the current tax year (6 April 2026 to 5 April 2027) and is useful for employees paid through PAYE, but it’s designed for straightforward employment situations — it won’t model dividend income or the nuances of being a company director.

Your employment structure has a bigger impact on take-home pay than most people realise — and this is where the one-size-fits-all calculator really starts to break down.

Employee through PAYE

Straightforward: tax and NI are deducted at source by your employer. The HMRC estimator tool handles this well. What it won’t show is any additional tax liability if you have other income sources — rental income, freelance work, or dividends from investments.

Limited company director

If you run your own limited company, you typically pay yourself a combination of a low salary and dividends. Done well, this approach reduces your overall tax and NI burden — but it requires careful planning. The salary and the dividend are taxed differently, and the dividend allowance for 2026/27 determines how much you can take tax-free before dividend tax rates kick in. A standard salary calculator isn’t built for this split at all.

Umbrella company worker

Contractors working through an umbrella company are treated as employees for tax purposes, so PAYE applies — but the gross figure quoted by an agency is often the assignment rate, not your actual gross employment income. Employer’s National Insurance and the apprenticeship levy come off first. From 6 April 2026 there are also new rules around PAYE responsibilities in labour supply chains, meaning agencies and end clients bear more accountability for ensuring correct tax deduction. The GOV.UK umbrella company calculator has been updated with 2026/27 rates and is worth using as a sense-check.

We’ve seen clients genuinely surprised by their actual take-home, even when they’d used a calculator beforehand. Here are the things that most tools don’t account for:

• The tapering Personal Allowance. If you’re earning between £100,000 and £125,140, your effective tax rate is significantly higher than the stated 40%. This catches a lot of senior employees and contractors off-guard.
• Multiple income sources. PAYE calculators model a single employment income. If you also have rental income, self-employed income, or dividend income, your tax liability needs to be calculated across all sources — typically via Self Assessment.
• Employer NI versus employee NI. Umbrella company workers in particular often see their “gross” quoted as the assignment rate, before employer’s NI has been deducted. Your actual gross employment income — the figure income tax and employee NI are then calculated on — is lower than the headline rate.
• Salary sacrifice arrangements. If you contribute to a pension via salary sacrifice, your taxable income is reduced — which is genuinely beneficial, but it means the take-home figure a basic calculator gives you will be higher than reality.
• Scottish income tax. If you’re a Scottish taxpayer, different rates and bands apply. A standard England/Wales calculator will give you the wrong answer. Take-home pay in Scotland deserves its own treatment.

None of this makes working out take-home pay impossible — it just means you need to be clear on which variables apply to your situation before trusting any single figure.

For owner-managed limited companies, the approach to take-home pay is fundamentally different from employment. Rather than simply receiving a salary, most directors pay themselves a modest salary — typically up to the National Insurance Secondary Threshold — and draw the remainder as dividends.

The reasoning is straightforward: salary attracts both employer and employee National Insurance contributions. Dividends do not attract NI at all. So for the same net profit leaving the company, a salary-plus-dividend combination generally results in more money in your pocket than an equivalent salary alone.

The important caveats are:

• Dividends can only be paid from post-tax profits. If the company hasn’t made a profit, you can’t pay a lawful dividend.
• Dividend tax rates (8.75% at basic rate, 33.75% at higher rate for 2026/27) still apply once you’ve used your dividend allowance.
• The salary level you choose affects your entitlement to certain state benefits, including the State Pension — so it’s worth thinking about, not just optimising for the lowest tax bill this year.

The gap between someone getting this right and getting it wrong can be meaningful over a full tax year. In our experience, a director earning £60,000 in company profit can easily find a difference of several thousand pounds in net income depending on how they structure their drawings — which is why we’d always suggest working through this with an accountant rather than a generic calculator. For more on how limited company accounting works in practice, it’s worth exploring further.