Use the Electronic Federal Tax Payment System (EFTPS) to pay your taxes. Pay via a secure site or by phone using the EFTPS Voice Response System.| www.irs.gov
Avoid IRS underpayment penalties by understanding estimated tax rules, safe harbor methods, and smart payment strategies to stay compliant and penalty-free.| Blog
Estimate your tax refund or how much you may owe the IRS with TaxCaster tax calculator. Feel confident with our free tax calculator that's up to date on the latest tax laws.| turbotax.intuit.com
Make payments, view your account or apply for a payment plan with the IRS.| www.irs.gov
Check your W-4 tax withholding with the IRS Tax Withholding Estimator. See how your withholding affects your refund, paycheck or tax due.| www.irs.gov