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UK money rules, explained

Clear, in-depth guides to the UK rules that affect your money, written the way we’d explain them to a friend. Every calculator comes with its own guide, with worked examples, charts and links to the official sources.

ARTICLES

In-depth articles

US Taxes · 11 min readNo tax on overtime and tips in 2026: what the new deductions are really worth

The 2026 overtime and tips deductions explained with worked examples: who qualifies, the $12,500 and $25,000 caps, the income phase-out, and the taxes you still pay.

Read guide · 8 October 2026
Business · 11 min readSelf-employed expenses in 2026/27: what you can claim and what it saves

What sole traders can claim as allowable expenses in 2026/27, the flat rates for mileage and working from home, the £1,000 trading allowance, and worked tax savings.

Read guide · 8 October 2026
Tax & Salary · 8 min readIs salary sacrifice worth it? What it really saves in 2026/27

Salary sacrifice cuts Income Tax, NI and student loan repayments. Worked 2026/27 examples for pensions, Cycle to Work and other schemes, and the catches.

Read guide · 7 October 2026
Tax & Salary · 7 min readMarriage Allowance in 2026/27: who gains £252, and how to claim four years back

A low earner can pass £1,260 of Personal Allowance to a basic rate spouse, worth up to £252 a year. Who qualifies, when it does not pay, and how to backdate.

Read guide · 7 October 2026
Tax & Salary · 9 min readThe £100,000 tax trap: why a pay rise can cost you 62% and how to keep more

Earn £100,000 to £125,140 and you lose your Personal Allowance and childcare help. What that costs in 2026/27, and how pension contributions win it back.

Read guide · 6 October 2026
Students · 9 min readPlan 2 vs Plan 5 student loans: what you will actually repay

Plan 2 vs Plan 5 for 2026/27: thresholds, interest and write-off compared with lifetime projections, and when overpaying your student loan helps or wastes money.

Read guide · 6 October 2026
Property · 9 min readBuying your first home in 2026/27: the real cost, from deposit to monthly payments

Stamp Duty relief, deposit, legal fees, surveys and mortgage payments for first-time buyers in England, Scotland and Wales, worked through for a £350,000 home.

Read guide · 6 October 2026
Tax & Salary · 8 min readHow UK take-home pay works in 2026/27: a plain-English guide

Income Tax, National Insurance, the Personal Allowance and the hidden 60% trap: what comes out of your salary in 2026/27, with a worked example.

Read guide · 20 May 2026

20 GUIDES

Tax & salary guides

Understand your payslip and what you take home.

Salary & Take-Home guide

See exactly what lands in your bank after Income Tax, NI and pension.

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Tax Bracket Checker guide

See your Income Tax band by band and what a pay rise actually costs.

Read the guide

Pro Rata Salary guide

Convert a full-time salary to part-time hours.

Read the guide

Hourly to Salary Converter guide

Turn an hourly rate into an annual gross figure.

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Emergency Tax guide

Estimate refunds from BR / K / 0T tax codes.

Read the guide

Bonus Tax guide

See what a one-off bonus is really worth after tax.

Read the guide

Overtime guide

Work out time-and-a-half and double-shift pay.

Read the guide

Tax Code Decoder guide

What does 1257L, BR or NT actually mean on your payslip?

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National Insurance guide

Class 1, 2 and 4 NI — explained without the jargon.

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Scottish Income Tax guide

The six-band Scottish system, calculated cleanly.

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P45 & P60 Explainer guide

Field-by-field breakdown of your payroll documents.

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Statutory Sick Pay (SSP) guide

Check your minimum SSP entitlement.

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Redundancy Pay guide

Statutory pay based on age and length of service.

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Holiday Entitlement guide

Statutory holiday days, pro-rated for any working pattern.

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Minimum Wage Checker guide

Are you being paid at least the current UK minimum?

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IR35 Take-Home guide

Inside vs outside IR35 contractor income.

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Reverse Take-Home guide

The salary you need for the take-home pay you want.

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Pay Rise guide

What a pay rise adds to your take-home after tax.

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Salary Sacrifice guide

What a pension, bike or other sacrifice really costs.

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Marriage Allowance guide

Transfer £1,260 of allowance and save up to £252 a year.

Read the guide

19 GUIDES

Mortgages & property guides

Plan the cost of buying, owning or renting a home.

Stamp Duty (England & NI) guide

SDLT on your next home, including the additional-property surcharge.

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LBTT (Scotland) guide

Scottish Land and Buildings Transaction Tax, by band.

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LTT (Wales) guide

Welsh Land Transaction Tax for residential purchases.

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First-Time Buyer guide

Stamp Duty relief and zero-tax thresholds.

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Buy-to-Let Yield guide

Gross and net yields on rental investments.

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Mortgage Repayment guide

Monthly payments, interest vs capital, over the full term.

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Mortgage Overpayment guide

How much time and interest can you save?

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Mortgage Affordability guide

How much could a UK lender offer you?

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Rent vs Buy guide

Compare years of rent against a mortgage and house growth.

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Shared Ownership guide

Mortgage + rent on the share you don't own.

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Property Capital Gains Tax guide

CGT on a second home or sold investment property.

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Council Tax Bands Lookup guide

Find your band and typical bill by postcode.

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Single Person Council Tax Discount guide

Apply the 25% solo-occupant rebate.

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Rent a Room Scheme guide

How much can you earn tax-free from a lodger?

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Moving House Budget guide

Surveys, legal fees, removals — the full picture.

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Rent Increase Checker guide

Is your rent rise legal, and what will it cost you?

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Tenancy Deposit Return guide

The deposit cap, fair deductions and what you should get back.

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Remortgage guide

What a new deal saves after fees and charges.

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Early Repayment Charge guide

Your mortgage ERC, free overpayments and when to switch.

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16 GUIDES

Freelance & business guides

Make sense of business taxes, income and costs.

15 GUIDES

Pensions & investing guides

Explore your savings, investments and retirement.

25 GUIDES

Family & benefits guides

Check support for your family and everyday life.

Universal Credit Estimator guide

Estimate your monthly Universal Credit award.

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UC Earnings Taper guide

How much UC you lose for every £ you earn.

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Child Benefit guide

Weekly Child Benefit by number of children.

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High Income Child Benefit Charge guide

Clawback above £60,000 — explained.

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Maternity Pay guide

SMP across the 39-week period.

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Paternity Pay guide

Statutory paternity pay entitlement.

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Shared Parental Leave guide

Split leave and pay between two parents.

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Tax-Free Childcare guide

Up to £2,000/year per child top-up — see your match.

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Free Childcare Hours Checker guide

15 or 30 free hours — eligibility by age and income.

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PIP Points Self-Check guide

Daily living + mobility scores against thresholds.

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Carer's Allowance Earnings Check guide

Stay within the weekly limit to keep your claim.

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Pension Credit Estimator guide

Top-up for low-income pensioners.

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Attendance Allowance guide

Help with care costs for over-65s.

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Benefit Cap Checker guide

Is your household above the cumulative cap?

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Local Housing Allowance guide

LHA rates by property size and region.

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Housing Benefit guide

Weekly help with rent for pensioners and supported housing.

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Council Tax Reduction guide

Means-tested help with your council tax bill.

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Benefits Eligibility Checker guide

See which benefits you are likely to get, in one go.

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New Style JSA guide

Jobseeker's Allowance from your National Insurance record.

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New Style ESA guide

Employment and Support Allowance if illness limits work.

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Child Maintenance guide

What the Child Maintenance Service formula says is due.

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Childcare Costs guide

What childcare costs after funded hours and top-ups.

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Adoption Pay guide

Statutory Adoption Pay week by week.

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Sure Start Maternity Grant guide

The £500 grant, or Scotland's Best Start Grant.

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UC Advance Repayment guide

What a Universal Credit advance takes from each payment.

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11 GUIDES

Vehicles & transport guides

Work out the cost of your car and your commute.

11 GUIDES

Students & education guides

Understand student finance and loan repayments.

13 GUIDES

Everyday life guides

Useful calculations for the things life brings.