UK Tax & Salary Guides

Plain-English explanations of Income Tax, National Insurance, student loans and more — all updated for 2026/27 HMRC rates.

Tax Basics

What Is the 1257L Tax Code?

The standard UK tax code for 2026/27 — what the number and letter mean, who gets it, and how to fix it if it's wrong.

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Student Finance

Student Loan Repayment Plans 1–5 Explained

All five UK student loan plans compared — thresholds, rates and write-off dates. Includes Postgraduate Loan 2026/27 figures.

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Pensions

Salary Sacrifice: Is It Worth It?

How salary sacrifice saves both Income Tax and National Insurance — real examples, EV and cycle-to-work schemes, mortgage considerations.

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Tax Planning

The £100,000 Tax Trap Explained

The effective 60% marginal rate between £100k and £125,140 — how the Personal Allowance withdrawal works and how pension contributions eliminate it.

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Tax Basics

National Insurance Rates 2026/27 — All Classes

Employee, employer and self-employed NI rates and thresholds for 2026/27. What each class funds and when you stop paying.

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Tax Basics

Second Job Tax UK — How Much Will You Pay?

Why your second job is taxed at 20% flat with no Personal Allowance, how the BR code works, and what happens at year end.

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Tax Basics

Scottish Income Tax Rates 2026/27 — All Six Bands

All six Scottish Income Tax bands compared with England and Wales, with real take-home differences at £30k, £50k, £75k and £100k.

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Tax Planning

Marriage Allowance UK 2026/27 — Save Up to £252

Who qualifies, how the £252 annual saving works, tax code changes (1007L and 1283L), and how to backdate claims up to 4 years.

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Self-Employed

The Complete Self-Employed Tax Guide UK 2026/27

Income Tax and Class 4 NI rates, allowable expenses, Payments on Account, and Self Assessment deadlines for the self-employed.

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Tax Basics

Emergency Tax Code Explained — W1, M1 & BR

What W1, M1, BR and 0T emergency codes mean, why you get them, how much extra tax you pay, and the fastest way to fix it.

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