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  1. TurboTax® Official Site: File Taxes Online, Tax Filing Made Easy

    Get ready for tax time with this easy checklist. Answer simple questions and get a preview of your refund with our income tax calculator. Stay up-to-date on the latest changes that affect you …

    • Reviews: 324K
    • Helping people understand and meet their tax responsibilities

      Find IRS forms and answers to tax questions. We help you understand and meet your federal tax responsibilities.

    • FreeTaxUSA® - Free Online Tax Filing for Federal Returns

      Your federal tax return and every supported federal form is 100% free. Whether you file a complex or simple federal return, we guarantee your federal return is always free.

    • Tax - Wikipedia

      A value-added tax (VAT), also known as Goods and Services Tax (GST), Single Business Tax, or Turnover Tax in some countries, applies the equivalent of a sales tax to every operation that …

    • File Taxes Online or In Person with H&R Block® Tax Services

      Easily prep & file your federal tax return with H&R Block to maximize your refund. No matter how you choose to file taxes this year, our services are guaranteed.

    • Taxes - USAGov

      Learn about filing federal income tax. Find out how to pay, how to check your refund, and more.

    • Tax Calculator - Tax Refund & Return Estimator 2024-2025 ...

      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.

      • Reviews: 324K
      • Iranian National Tax Administration - Wikipedia

        Herodotus, an ancient Greek historian, pointed out that Darius I had divided Iran into twenty tax districts and, along with each governor, sent a tax officer to each Satrap. At the same time, all …

      • Taxation in Iran - Wikipedia

        The Iranian National Tax Administration shall be obliged to investigate such tax returns and assess the taxable income of such taxpayers based on the supporting documents and the tax …

      • Federal income tax rates and brackets - Internal Revenue Service

        Jul 8, 2025 · See current federal tax brackets and rates based on your income and filing status.