Perform real-time tax calculations and create IRS-compliant documents with zero data storage.
Track the real-time status of your IRS federal tax refund, estimate direct deposit dates, and decode refund delay codes.
Calculate your 2025 & 2026 federal tax bracket, marginal rate, and effective tax rate with standard vs itemized deduction comparisons.
Calculate your net take-home pay per paycheck across all 50 states after federal taxes, state withholdings, and FICA deductions.
Estimate 15.3% Schedule SE tax for 1099 contractors, 50% above-the-line deduction, and Form 1040-ES quarterly deadlines.
Generate professional, compliant employee & contractor paycheck stubs with automatic federal, FICA, and state tax calculations.
Fill out, digitally sign, and download an official IRS Form W-9 PDF instantly. 100% private with zero server data retention.
Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting for international payees.
Calculate federal and state tax withholding on lottery jackpots, casino prizes, and lump-sum vs annuity payouts.
Step-by-step guidance for completing your annual U.S. Individual Income Tax Return, standard deduction checks, and schedules.
Primary statutory reference publications published by the Internal Revenue Service for taxpayers, business owners, and accounting professionals.
The definitive federal guidance on employer tax obligations, federal income tax withholding tables, Social Security, Medicare (FICA), and FUTA wage bases.
Comprehensive guidance for sole proprietors and statutory independent contractors filing Schedule C (Form 1040), covering business revenue, cost of goods, and write-offs.
Official rules on quarterly estimated tax payments (Form 1040-ES), underpayment penalty calculations, and the statutory 90%/110% safe harbor rules.
Detailed breakdown of deductible commercial expenses under IRC § 162, including vehicle mileage, home office, health insurance, and equipment expensing.
Mandatory rules for payers handling IRS CP2100 / CP2100A notices, issuing First and Second B-Notices, and applying 24% backup withholding.
IRS statutory guidelines for claiming business travel deductions, the standard mileage rate, vehicle depreciation limits, and the 50% business meal limitation.
Direct portals for federal tax transcripts, online payments, and live assistance.
Authorized online program enabling payers to verify payee names and TINs against IRS master files prior to 1099 filing.
Access Portal →Access your official IRS transcripts, view payment history, verify recent return processing status, and review tax notices.
Access Portal →Free federal service for paying federal taxes online, including Form 1040-ES quarterly estimated taxes and Form 945 withholding.
Access Portal →Independent organization within the IRS helping taxpayers resolve tax problems causing economic harm or hardship.
Access Portal →1-800-829-1040 (M-F, 7 AM - 7 PM local time) • Business & Specialty Tax: 1-800-829-4933 • Hearing Impaired (TTY): 1-800-829-4059.Need to check individual state tax withholding rates, find out which 9 states have 0% income tax, or verify state-level filing deadlines? Explore our comprehensive 50-state tax guide directory.