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Guides & references

Plain-language explainers and reference tables that pair with the tools.

UPI MDR 2026 complete guide

How the 0.4% merchant rate, ₹300 cap and P2PM exemptions work, with examples.

GST filing calendar FY 2026-27

Every GSTR-1, GSTR-3B, CMP-08, IFF and annual return deadline in one place.

HSN/SAC codes & GST rates

Search codes for common goods and services, with applicable rates.

Old vs new tax regime

Compare both regimes side by side before you declare investments.