Tax Concepts

Cost Basis

Cost basis is the starting value used to measure gain or loss when property, investments, or business assets are sold or disposed of.

Quick answer

Cost basis is the starting value used to measure gain or loss when property, investments, or business assets are sold or disposed of.

It matters because basis errors can overstate or understate taxable gain.

If you buy stock for $10,000 and sell it for $14,000, basis helps determine the taxable gain.

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Plain-English Definition

What Cost Basis means

Cost basis is the starting value used to measure gain or loss when property, investments, or business assets are sold or disposed of.

Why it matters It matters because basis errors can overstate or understate taxable gain.
Simple example If you buy stock for $10,000 and sell it for $14,000, basis helps determine the taxable gain.
Related Questions

Questions people ask about Cost Basis

What does Cost Basis mean?

Cost basis is the starting value used to measure gain or loss when property, investments, or business assets are sold or disposed of.

Why does Cost Basis matter?

It matters because basis errors can overstate or understate taxable gain.

What is a simple example of Cost Basis?

If you buy stock for $10,000 and sell it for $14,000, basis helps determine the taxable gain.

When should I ask a CPA about Cost Basis?

Ask a CPA when the term affects your tax bill, estimated payments, deductions, or a planning move before year end.

How is Cost Basis different from Capital Gains Tax?

Cost Basis means Cost basis is the starting value used to measure gain or loss when property, investments, or business assets are sold or disposed of. Capital Gains Tax means Capital gains tax is the tax on profit from selling a capital asset for more than its basis. The difference is that they apply to different tax, accounting, or business situations and should not be treated as interchangeable.

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