About CalculateUSA
CalculateUSA provides free, accurate financial calculators designed specifically for American workers, students, and businesses. Our mission is to simplify complex financial calculations and help you make informed decisions.
Our Mission
We believe everyone deserves access to professional-grade financial tools without cost or complexity. Whether you're calculating your take-home pay in Texas, estimating student loan payments in New York, or planning a construction project in California, CalculateUSA is here to help.
Accuracy & Verification
Our calculators are built using official data sources and are updated annually to reflect the latest tax laws, rates, and regulations:
- Federal Tax Data: IRS Publication 15-T and official tax tables for 2025
- State Tax Data: Official state department of revenue publications
- FICA Rates: Social Security Administration official rates
- Freight Classes: NMFTA National Motor Freight Classification
- Student Loan Rates: Federal Student Aid official rates
Our Calculators
Payroll Calculator
Calculate take-home pay with federal and state-specific tax calculations for all 50 states.
CD Calculator
Estimate Certificate of Deposit returns with compound interest calculations.
Student Loan Calculator
Plan student loan repayment with amortization schedules and extra payment analysis.
Freight Class Calculator
Determine NMFC freight classification based on shipment density.
Concrete Calculator
Calculate concrete volume for slabs, footings, columns, and stairs.
Privacy & Security
Your privacy matters. All calculations are performed directly in your web browser. We do not store, transmit, or have access to any financial information you enter into our calculators.
Contact Us
Have questions or suggestions? We'd love to hear from you! Visit our Contact page to get in touch.