Guides
1099 Tax Calculator — Self-Employment Tax & Quarterly Payments
Step-by-step how-to guides for using 1099 Tax Calculator — Self-Employment Tax & Quarterly Payments and related techniques. Written for practical use — follow each guide to get accurate results for your specific situation.
Quarterly Estimated Tax Deadlines and the Safe Harbor Rule
The 2026 quarterly estimated tax deadlines for 1099 income, and how the IRS safe harbor rule protects against an underpayment penalty.
intermediate Read guide →What Business Expenses Reduce Your 1099 Taxable Income
The general Schedule C expense categories that reduce net self-employment profit, and why net profit — not gross revenue — is what gets taxed.
beginner Read guide →