Tyms

Tax Deduction

A tax deduction is an expense or allowance that can be subtracted from income to reduce the amount of income that is taxed, such as business expenses, depreciation allowances and pension contributions, lowering the final tax bill.

What is a tax deduction?

A tax deduction reduces taxable income, not the tax itself. The saving equals the deduction multiplied by the tax rate. This differs from a tax credit, which reduces the tax bill directly.

Example

A business with $100,000 taxable profit and a 25% tax rate pays $25,000. A $10,000 deductible expense reduces taxable profit to $90,000 and tax to $22,500, a saving of $2,500. A $2,500 tax credit would give the same saving directly.

Common business deductions

  • Rent, utilities and office costs
  • Salaries, wages and employer pension contributions
  • Cost of goods sold
  • Advertising and marketing
  • Professional fees
  • Business travel
  • Interest on business loans
  • Depreciation or capital allowances on equipment
  • Bad debts written off

What usually isn't deductible

  • Fines and penalties
  • Personal or private expenses
  • Most entertainment (depending on country)
  • Income tax itself
  • [Dividends](/glossary/dividend) paid to shareholders

Tips

  • Keep receipts and records for every claim.
  • Separate business and personal spending.
  • Check local rules, because deductibility varies between countries.

See also [business expenses](/glossary/business-expenses).

Further reading

See Tyms on your own numbers

Get your books, reports and tax in one place.