Form W-9 (Request for Taxpayer Identification Number and Certification) is provided by individuals and businesses to clients who will report payments to them on a 1099. Provides: name, business name (if applicable), tax classification (individual, S-corp, LLC, etc.), TIN/SSN, address. Self-employed individuals typically complete W-9s before receiving the first payment from a new client. Clients use the W-9 information to prepare year-end 1099s. Don't sign blank W-9s. If a client requests a W-9 for a transaction that shouldn't be 1099-reportable (purely product sales under $600), ask why before complying. Submit via secure channels — W-9s contain sensitive identity information.
Article
Alternative Minimum Tax
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American Opportunity Credit
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Bunching Deductions
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Form W-9
August 22, 2026 · Aditya Gupta
Tax
Related terms
Alternative Minimum Tax
Alternative Minimum Tax (AMT) is a parallel tax system designed to ensure high-income taxpayers pay a minimum. Calculate…
American Opportunity Credit
The American Opportunity Credit provides up to $2,500 per student per year for the first four years of…
Bunching Deductions
Bunching deductions is the strategy of concentrating itemizable expenses into alternating years to exceed the standard deduction in…
Charitable Contribution Deduction
Charitable contribution deductions allow taxpayers who itemize to deduct cash donations to qualified 501(c)(3) charities up to 60%…
Child Tax Credit
The Child Tax Credit (CTC) provides $2,000 per qualifying child under 17, with $1,600 refundable as the Additional…
Deductible Business Expense
A deductible business expense must be both 'ordinary' (common in your industry) and 'necessary' (helpful to the business).…
