🧾 CalcuTools Decision Engine

Tax Planning Engine for Tax Year 2026-27

Model ordinary-rate income, check the standard deduction and 87A zone, account for tax already paid, and see whether an advance-tax watch is triggered. Keep the assumptions visible instead of treating one result as universal tax advice.

Scope: This version models a resident individual using ordinary slab-rate income for Tax Year 2026-27. Capital gains, lottery/special-rate income, surcharge above ₹50 lakh taxable income, business presumptive-tax nuances and other special provisions require separate treatment.

1. Enter your assumptions

Use annual figures. For employer NPS, enter only the amount you are actually eligible to claim under the applicable rules and payroll records.

Enter gross salary/pension income relevant to this model.
For example, ordinary interest income. Do not put capital gains here.
Optional. Enter the eligible deduction amount, not an unverified gross contribution.
The 87A resident rebate condition is modelled here.
Enter tax already credited/withheld for this tax year.
Current-rule basis: Tax Year 2026-27 is under the Income Tax Act, 2025. The 2026 Finance Bill stated that applicable income-tax rates for FY 2026-27 were not being changed. The 2025 Budget introduced the ₹4–8 lakh, ₹8–12 lakh, ₹12–16 lakh, ₹16–20 lakh, ₹20–24 lakh and above-₹24 lakh slab structure and the enhanced 87A relief framework.

2. Read the result

The engine keeps deductions, rebate, cess and payments separate so you can see what drives the final number.

Gross model income₹0
Standard deduction₹0
Taxable income₹0
Slab tax before rebate₹0
87A rebate₹0
Marginal relief₹0
4% cess₹0
Estimated total tax₹0
TDS + advance tax
Estimated balance tax₹0
Estimated excess paid₹0
Next advance-tax dateNot triggered

3. What is driving the result?

StageWhat the engine does
Gross incomeSalary/pension + other ordinary-rate income entered.
Standard deductionUp to ₹75,000 against salary/pension income in this model.
Eligible employer NPSDeducted only when the user enters the eligible amount.
Taxable incomeGross income less modelled deductions, floored at zero.
Slab taxUses the Tax Year 2026-27 ordinary-income slab structure.
Rebate / marginal reliefModels resident 87A relief up to ₹12 lakh taxable income and marginal relief for income marginally above the threshold.
Cess4% of tax after rebate/marginal relief in this model.
PaymentsTDS and advance tax already entered are compared with estimated total tax.

Important: This is a planning model, not an ITR filing engine. The Income Tax Department notes that Tax Year 2026-27 uses the Income Tax Act, 2025, while earlier years remain governed by the transition rules. Special-rate income, surcharge, business/profession complexities and individual facts can materially change the calculation.

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