A tax deduction reduces your taxable income; a tax credit reduces your actual tax bill dollar-for-dollar. Credits are generally more valuable because they directly cut what you owe, not just the income it's calculated on.
Tax deductions and tax credits both reduce how much you pay in taxes — but they work at different points in the calculation. Understanding the difference helps you see why your tax bill comes out the way it does.
A deduction reduces the amount of income subject to tax. With $60,000 in income and a $10,000 deduction, you're taxed on $50,000. A deduction's dollar value depends on your bracket — a $1,000 deduction is worth $220 in the 22% bracket but only $120 in the 12% bracket.
A credit is a dollar-for-dollar reduction of your actual tax liability. A $1,000 credit reduces what you owe by exactly $1,000, regardless of bracket. Credits come in two types:
Taxable income is the starting point for your tax bill: adjusted gross income (AGI) minus either the standard deduction or your itemized deductions. Deductions reduce this number; your tax rate is applied to what remains. Credits come into play after that calculation.
Business owners often have deductions (business expenses, depreciation, home office) that reduce taxable income. Lenders use taxable income as reported — so large legitimate deductions can lower the income figure a lender sees. A tax professional can help balance minimizing taxes now vs. the income documentation you'll need for future financing.