Tax Basics

Introduction

Taxes pay for public services. Rules differ greatly between countries and change often, so this lesson explains general ideas with an invented example. It is not tax advice. For your own situation, use your tax authority's official guidance or a qualified adviser.

Common kinds of tax

• Income tax: on earnings, often deducted by an employer before you are paid.
• Social or payroll contributions: fund pensions, health or unemployment benefits in many countries.
• Sales tax or VAT: added to purchases.
• Property tax: on land or buildings.
• Capital gains tax: on profit from selling certain assets.
• Corporate tax: on business profits.

Progressive tax and bands

Many income tax systems are progressive: higher slices of income are taxed at higher rates. The key idea is that a rate applies only to the slice of income in that band, not to everything.

Invented example:

Income of 50,000:

• First 10,000: 0
• Next 30,000 at 20 percent: 6,000
• Last 10,000 at 40 percent: 4,000
• Total tax: 10,000

The marginal rate (the rate on the next unit earned) is 40 percent. The average rate is 10,000 divided by 50,000, which is 20 percent.

A common myth is that a pay rise can leave you with less money because it pushes you into a higher band. In a band system like this, only the extra income above the threshold is taxed at the higher rate, so you still take home more. (Some systems have special thresholds or benefit withdrawals that create exceptions, so check your own rules.)

Deductions and credits

• A deduction reduces the income that is taxed.
• A credit reduces the tax bill directly.
• Allowances and reliefs vary by country. Some relate to pensions, education, children or work costs.

Use only reliefs you genuinely qualify for. Tax avoidance using legal rules is different from tax evasion, which is illegal. If you are unsure, ask the authority or a qualified adviser.

Employees, the self-employed and records

• Employees often have tax handled through payroll, but should still check statements and codes.
• Self-employed people usually must register, keep records, file returns and pay tax and contributions, sometimes in advance instalments. Set money aside from each payment.
• Keep records: income statements, receipts, invoices, bank statements and contracts, for the period your authority requires.
• Meet deadlines. Penalties for late filing can be costly.

Scams

Tax authorities do not demand immediate payment by gift cards or cryptocurrency. Be wary of unexpected messages claiming refunds or arrears. Use official websites and numbers.

Getting help

Official websites, free helplines and low-income tax clinics exist in many countries. Accountants can help with complex situations. Check their qualifications.

Try it yourself

Take the example bands. Calculate tax and the average rate for incomes of 20,000, 40,000 and 60,000. Then find your own country's official income tax page.

Summary

• Many income taxes are progressive, with each rate applying only to its own slice of income.
• Know marginal versus average rates, and the difference between deductions and credits.
• Keep records, meet deadlines, avoid evasion and use official guidance.