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Financial Library

Comprehensive, actionable, UK-focused financial guides. Browse by topic to find the calculators and guides that answer your specific question — from your first payslip to early retirement.

Browse by topic

Each topic hub features the relevant calculators and groups guides by the actual question you are trying to answer — with a short intro and help picking the right page when articles overlap.

Mortgages & Home Buying
How much you can borrow, the real cost of buying, choosing a mortgage and overpaying.
Savings & Compound Interest
How compounding works, goals you will stick to, emergency funds and tax-free accounts.
Debt & Repayment
Snowball vs avalanche, escaping credit card debt, comparing loans and consolidation.
UK Salary & Tax
Take-home pay, income tax, National Insurance, student loans and legal tax planning.
US Salary & Tax
Federal tax brackets, FICA, the standard deduction and 401(k)/IRA retirement planning.
Pensions & Retirement
Workplace pensions, tax relief, salary sacrifice, the Annual Allowance and early retirement.
Self-Employment
Sole-trader profit, Self Assessment, allowable expenses, freelance cash flow and side-hustle tax.

All guides by category

The full library, grouped by area. Each guide links back to its topic hub and to the calculators that put the numbers behind the advice.

Salary & Income

Calculate True Take-Home Pay
New
A complete guide to gross-to-net conversion and payslips.
UK Salary Guide
Understanding take-home pay and payslip deductions.
Student Loan Repayments
New
Understand thresholds and how loans function as a graduate tax.
Self-Employment Income
Turnover, profit, and tax obligations for sole traders.
Freelance Income Guide
Managing irregular income and tax planning for freelancers.
Side Hustle Tax Guide
Maximize your trading allowance and report side income.

Tax Planning

Pension Tax & Take-Home
New
See exactly how pension saving alters your monthly payslip.
UK Income Tax Guide
Master tax bands, personal allowances, and relief.
Self-Employed Tax Planning
New
Navigate Self Assessment and allowable expenses.
National Insurance Guide
Understand NI contributions, thresholds, and state benefits.
Tax Planning Guide
Legal strategies to reduce your tax bill efficiently.
Marriage Allowance Guide
Eligibility and claiming process for couples.

Pensions & Retirement

Salary Sacrifice vs Normal
New
Maximize take-home pay and pension growth effectively.
Workplace Pensions Guide
Automatic enrolment, contributions, and employer matches.
Pension Contributions Guide
Optimize contribution limits and claim maximum tax relief.
Pension Planning Guide
Plan your retirement pots and calculate income needs.
Early Retirement Guide
Pension access rules and bridging income to State Pension age.

Savings & Investments

Complete Compound Interest Guide
New
The Rule of 72, the cost of waiting, and pitfalls that destroy compounding.
Compound Interest Deposits
New
How regular monthly deposits create exponential wealth.
Realistic Savings Goals
New
Stop abandoning targets. Use the SMART framework.
How Much Emergency Fund?
New
Calculate your exact safety net to beat inflation.
Building an Emergency Fund
Determine your safety net target and protect yourself from financial ruin.
Savings Goals Guide
Plan, track, and achieve realistic financial targets.
High-Interest Savings Guide
Find the best rates and maximize your interest returns.
Tax-Free Savings Guide
Utilize ISAs and Premium Bonds to shield your wealth.

Debt Management

Snowball vs Avalanche
New
Compare the math and psychology of payoff strategies.
Compare Loan Repayments
New
Look past the monthly payment and calculate true cost.
Debt Repayment Guide
Create an effective plan to become completely debt-free.
Credit Card Debt Guide
Understand interest traps and how to escape the spiral.
Personal Loan Guide
Navigate interest rates, terms, and affordability.
Debt Consolidation Guide
When combining debts helps, and how to avoid the pitfalls.

Mortgage & Housing

Mortgage Overpayments
New
Strip years off your term and save tens of thousands.
First-Time Buyer Checklist
New
Map every hidden cost, fee, and deposit requirement.
Mortgage Affordability
How much can you borrow? Income multiples, deposits and stress tests.
Comprehensive Mortgage
Understand mortgage types, rates, and affordability.
First-Time Buyer Guide
Navigate the property ladder from deposit to completion.

Every guide is written and maintained by Shaun da Silva, Finance Consultant with over 20 years in the financial sector. View author profile or read our Editorial Policy.