Financial Calculators
Advance Tax Calculator
Calculate quarterly advance tax installments and avoid Section 234B/234C interest.
This tool provides an estimate or a starting draft. Check the assumptions and current official requirements before relying on the result. It does not replace qualified financial, legal or medical advice.
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The Advance Tax Calculator helps taxpayers estimate and plan their quarterly advance tax payments for the current financial year. Under Section 208 of the Income Tax Act, any individual or business with a tax liability exceeding ₹10,000 after accounting for TDS must pay advance tax in four installments throughout the year rather than as a lump sum at the end.
Paying advance tax on time prevents interest liability under Sections 234B and 234C. Section 234B charges 1% interest per month for non-payment of advance tax, and Section 234C penalizes underpayment of each quarterly installment. Our calculator shows the exact amount due by each deadline — June 15, September 15, December 15, and March 15 — so you can schedule payments through Challan 280 on the income tax portal.
Salaried employees whose full tax is deducted by employers typically don't need to pay advance tax. But freelancers, business owners, investors with capital gains, and anyone earning significant interest or rental income should use this calculator. The calculation is straightforward: estimate your annual income, compute the tax using the applicable slab, deduct expected TDS, and plan the four installments as a percentage of the net tax liability.
How to use this utility
- Use the controls below—paste text, pick files, or adjust options as described on the tool.
- Click the main action button. Processing runs in your browser on this device.
- Download or copy the output. Check the processing note for any external services used by this operation.
Common use cases
- Freelancers and consultants managing quarterly self-assessment tax payments
- Business owners planning cash flow around advance tax due dates
- Investors with capital gains from equity, property, or mutual funds
- High-income salaried employees with significant side income
- Professionals checking whether they need to pay advance tax at all
Tips for best results
- 1Don't wait for the FY to end — estimate income in April and pay the first installment by June 15
- 2If you miss the September 15 installment, you'll need to pay 1% per month interest under 234C
- 3Budget at least 15% of estimated net income for advance tax if you're a freelancer
- 4Revised estimates are fine — if income surges later in the year, increase subsequent installments
- 5Salary earners who expect a shortfall in employer TDS deduction should pay balance by March 15
Frequently asked questions
- Is Konnect2Tools free?
- Yes. These in-browser tools are completely free to use with no account required for core functionality.
- Do my files leave my device?
- Browser document operations run locally, except where the operation uses an external service, such as AI summarisation. Read the processing note before using sensitive inputs.
- Is the Advance Tax Calculator tool safe to use?
- Local operations process document content on your device. External-service operations may send inputs as described in the processing note. Keep originals and inspect the output.
- Who is required to pay advance tax?
- Any individual, firm, or company with estimated tax liability exceeding ₹10,000 after TDS must pay advance tax. Senior citizens (60+) with only salary and interest income are exempt. NRIs with Indian income must also comply if their tax liability exceeds ₹10,000.
- How do I pay advance tax?
- Pay through Challan 280 on the income tax e-portal (incometax.gov.in) under 'Self Assessment Tax' or 'Advance Tax'. Net banking or debit card payments are instant. Keep the challan number for ITR filing.
- What is the penalty for not paying advance tax?
- Section 234B charges 1% simple interest per month (or part thereof) on the shortfall from 1 April to the date of actual payment. Section 234C charges 1% per quarter on deficient installments. Both can add up to 3–6% extra on your tax bill.
- Can I revise my advance tax estimate mid-year?
- Yes. If your income increases or decreases, you can revise in subsequent installments. For example, if you overestimate Q1, you can reduce Q2's payment accordingly. There is no penalty for revising estimates.
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