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GST & Advance Tax Cash-Flow Forecaster

Project your monthly GST outflow and quarterly advance tax instalments for the next 12 months, based on your expected revenue growth — so cash for tax is set aside before it's spent on something else. No password, and nothing you enter ever leaves your browser.

Aggarwal Abhishek & Co. Startup Suite

GST & Advance Tax Cash-Flow Forecaster
Planning aid, not a filed computation. GST payable is estimated as Output GST minus an assumed Input Tax Credit percentage you provide — your actual ITC depends on real purchases and supplier compliance. Advance tax instalments follow the statutory cumulative schedule (15% by 15 June, 45% by 15 September, 75% by 15 December, 100% by 15 March of the estimated annual tax liability) — this schedule carries over unchanged under the Income Tax Act, 2025 (effective 1 April 2026), which replaced the erstwhile Section 211 with renumbered provisions.
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Quick details before you begin

This tool is free to use. We just ask for a few contact details first, so our team can follow up if you'd like help with GST filing or advance tax planning. No revenue data is ever sent to us — only the contact details below, and only if you choose to submit them.

We collect only the contact details above — never the revenue figures you use inside the tool.

Forecast Inputs
Result

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Advance Tax Instalment Schedule
12-Month GST & Revenue Forecast
How to Use This Forecast

    Want a CA to check this for you?

    We can look at your actual turnover, input credit and profit, and help you set a realistic amount aside for GST and advance tax.

    Disclaimer: This is a self-help planning aid, not a filed computation. It assumes a constant month-on-month growth rate, a constant GST rate and ITC ratio, and a constant profit margin — real businesses see all of these fluctuate. Advance tax is normally not required if your total estimated tax liability for the year is under ₹10,000 — this ₹10,000 threshold applies to everyone, including those on the presumptive taxation scheme under Section 44AD/44ADA. The only difference for presumptive taxpayers is timing, not a higher exemption: instead of four instalments, they can pay their entire advance tax in a single instalment by 15 March. GST due dates shown assume monthly regular filing; QRMP filers pay tax monthly but file returns quarterly, on a slightly different cadence. Section references (234B, 234C) are the well-known Income-tax Act, 1961 numbers; the Income-tax Act, 2025 (effective 1 April 2026) has renumbered many provisions, so confirm the corresponding current section number before citing it formally — the underlying interest rules and rates are unchanged. Aggarwal Abhishek & Co. does not certify these figures — please have us review your actual numbers before setting aside or remitting any amount.