Entity & Regime start here
Rates & Parameters edit to keep current
Every rate, slab and threshold the engine uses lives here. Change a value and the whole tool recomputes — so it stays correct as the law changes year to year.
Company rates
Individual — new regime slabs
| Income up to (₹) | Rate |
|---|
Individual — old regime slabs (< 60)
| Income up to (₹) | Rate |
|---|
Individual surcharge bands
| Income over (₹) | Surcharge |
|---|
Firm / LLP rates
Common
Instalment schedule (Sec 408) — edit due dates, cumulative %, the no-interest relaxation and Sec 425 months here.
| Instalment | Due date | Cumulative % | No-interest relax % | Months (425) |
|---|
Part 1 · Depreciation — Companies Act / books
| Asset class | Life (yrs) | Residual % | Opening WDV | Additions | Deletions | WDV rate | Depreciation | Closing WDV |
|---|
For a proprietor or firm, this is the depreciation as per books. WDV method: rate = 1 − residual^(1/life).
Part 2 · Depreciation — Income-tax Act (block WDV)
| Block | Rate | Opening WDV | Add. ≥180d | Add. <180d | Deletions | Depreciation | Closing WDV | STCG flag |
|---|
First row is treated as Plant & Machinery for additional depreciation. Opening WDV = finalised prior-year closing WDV.
Part 3 · Additional Depreciation — s.32(1)(iia)
Eligible new P&M (≥180 days)—
Eligible new P&M (<180 days)—
Additional depreciation gross (20% / 10%)—
Additional depreciation allowed—
Part 4 · Business / Turnover — top-down estimate
| Unit / segment | Estimated turnover | Margin % | Profit before dep. & tax |
|---|
Profit before depreciation & tax — total—
Other Income Heads
Part 5 · Book ↔ Income-tax Reconciliation
Profit before depreciation & tax—
Less: Depreciation as per books—
Net profit before tax as per books—
Less: Depreciation as per Income-tax Act—
Less: Additional depreciation allowed—
Less: Remuneration & interest to partners—
Business income before special-rate items—
Part 6 · Capital Gains & Special-rate Income
MAT / AMT Working
Net profit before tax as per P&L—
Add (if debited to P&L)
| Particulars | Amount (₹) |
|---|
Less (if credited / eligible)
| Particulars | Amount (₹) |
|---|
Book profit u/s 206—
MAT @ rate + surcharge + cess—
MAT applies only under the Normal / 115BA regimes. Under 115BAA / 115BAB it does not apply.
Total income (normal provisions)—
Adjusted total income—
AMT @ rate + surcharge + cess—
Tax Computation & Net Advance Tax
Advance Tax Instalment Schedule — Sec 408
| Instalment | Due date | Cum % | Cumulative payable | Ideal instalment | Paid up to date | Shortfall/(excess) |
|---|
Edit due dates and % under Rates & Parameters. "Paid up to date" reads from the Payment Tracker by date.
Interest — Sec 424 (ex-234B) & Sec 425 (ex-234C)
Assessed tax (net tax payable)—
Advance tax paid up to 31-Mar-2027—
Sec 425 — deferment of instalments
| Inst. | Required | Paid | 408(4) relief | Applies? | Shortfall | Months | Interest |
|---|
Interest under Sec 424—
Total interest exposure (424 + 425)—
Advance Tax Payment Tracker — Challan Register
| Date | Challan / CIN | BSR | Bank | Component | Amount (₹) | Remarks |
|---|