How to Calculate Advance Tax for Your Business in 2026

Businesses do not always have to wait until the end of the financial year to pay their income tax. If the estimated tax liability meets the applicable threshold, advance tax may need to be paid during the financial year.

Calculating advance tax correctly helps businesses manage their cash flow and avoid unnecessary interest charges.

What Is Advance Tax?

Advance tax is income tax paid in instalments during the financial year based on estimated income.

It generally applies when the estimated tax payable for the year is ₹10,000 or more, subject to applicable provisions.

For businesses, advance tax is particularly important because income and expenses can change throughout the year.

Steps to Calculate Advance Tax

Step 1: Estimate Your Annual Business Income

Start by estimating the total income your business expects to earn during the financial year.

Consider:

• Sales and business receipts
• Other taxable business income
• Interest or other taxable income
• Expected expenses
• Depreciation and other applicable deductions

The estimate should be as realistic as possible based on your current business performance.

Step 2: Calculate Your Taxable Income

After estimating your income, deduct eligible business expenses and applicable deductions according to the relevant tax provisions.

This gives you an approximate taxable income for the year.

Step 3: Calculate Your Estimated Tax Liability

Apply the applicable tax rate to your estimated taxable income.

The tax calculation may depend on the type of taxpayer. For example, the tax treatment for a company, partnership firm, LLP or individual carrying on a business can be different.

Businesses should therefore use the provisions applicable to their particular structure.

Step 4: Reduce TDS and TCS Credits

If tax has already been deducted or collected on your income, such amounts can generally be considered while calculating the remaining advance tax liability, subject to applicable rules.

For example:

Estimated tax liability − TDS/TCS credits = Approximate advance tax payable

Step 5: Pay Advance Tax in Instalments

For taxpayers to whom the regular advance tax provisions apply, the tax is generally paid in four instalments:

The instalments are cumulative, meaning each payment contributes towards the total advance tax payable for the year.

Example of Advance Tax Calculation

Suppose a business estimates its total tax liability for the year at ₹2,00,000 after considering applicable calculations and expects ₹50,000 of TDS credit.

The approximate advance tax liability would be:

₹2,00,000 − ₹50,000 = ₹1,50,000

The business would then generally pay the applicable amount according to the advance tax instalment schedule.

This is only an illustration. Actual tax calculations depend on the taxpayer's income, deductions, tax regime and applicable provisions.

What If Business Income Changes?

Business income can increase or decrease during the year.

If your estimated tax liability changes, you should review your advance tax calculation and adjust subsequent instalments accordingly.

This is particularly important for businesses with seasonal or fluctuating income.

What Happens If Advance Tax Is Underpaid?

If advance tax is not paid correctly when required, interest may apply under the Income-tax Act.

Regularly reviewing estimated income can help businesses reduce the possibility of a significant tax liability or interest burden later.

Conclusion

Calculating advance tax requires businesses to estimate their annual income, determine taxable income, calculate the expected tax liability and consider available TDS or TCS credits.

Since business income can change during the year, advance tax calculations should be reviewed periodically rather than being treated as a one-time exercise.

Businesses should always consider the tax provisions applicable to their specific structure and the relevant financial year before making advance tax payments.