The last date for filing Income Tax Return (ITR) is 15th September 2025. If you have not calculated your tax till now, you can calculate your income tax liability. Most taxpayers find it difficult to assess their exact tax liability and deductions available to them. In such a situation, online tax calculators are the easiest way to calculate the exact tax due and deductions applicable.

In this write-up, we will tell you about 5 such free online tax calculator tools, with the help of which you can calculate your tax quickly and file your ITR on time.

Filing your tax return this year? Head to our detailed ITR Guide for everything you need to know.

Income Tax Department’s e-filing portal calculator

    The Income Tax Department provides a free tax calculator on its official website. It is considered the most reliable as it is directly from the government. Here you can know your tax liability by entering personal details, income and deductions.

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    Tax Calculator of Financial Express Online

      The income tax calculator available on the ITR guide page of Financial Express (FE) Online is very easy and accurate. Here you can enter your income, tax-saving investments, HRA, home loan and other details to instantly see how much your tax is and which tax regime (old or new) will be better for you. This tool is very useful before filing ITR as it gives you a clear picture.

      ClearTax’s tax calculator

        ClearTax is a popular tax filing platform. Its calculator is simple and easy to use. The special thing is that it immediately tells you how much your tax will be in the new tax regime and the old tax regime. This helps you make the right choice.

        HDFC Bank Tax Calculator

          If you trust the banking platform, then HDFC Bank’s online tax calculator is also a great option. You can easily calculate your tax by entering the information on income, deductions and exemptions here.

          Groww’s Tax Calculator

            The tax calculator available on the Groww app and website is popular among investors. It is very useful due to its easy interface and instant results.

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            Why is it important to choose a good tax calculator for ITR filing?

            Tax calculators give you an estimate of tax, but it is important to be careful while choosing the ITR form. For example:

            ITR-1 (Sahaj): For people with annual income up to Rs 50 lakh and income only from salary, one house property or other source (interest).

            ITR-2: If you have income from capital gains (share/mutual fund sales).

            ITR-3: For those with business or professional income.

            ITR-4 (Sugam): For small businesses and professionals with presumptive income scheme.

            More details on ITR filing AY 2025-26

            The deadline to file ITR this year is September 15, 2025. If you miss this due date, you will have to pay a penalty of up to Rs 5,000 under section 234F.

            Also, the refund will be delayed on late filing and there may also be an additional burden of interest.

            Summing up…

            The deadline for ITR filing is now very close. In such a situation, to estimate your tax accurately and file returns on time, definitely use the online tax calculator. Especially, the tax calculator available on the ITR guide page of Financial Express (FE) can prove to be a great tool for taxpayers. So what are you waiting for? Calculate your tax before September 15 and file ITR without stress.