BD Tax AY 2026โ€“27
Bangladesh Individual Tax โ€” Fully Dynamic (AY 2026โ€“27)
Annual mode computes slab tax + section 78 rebate + minimum tax + surcharge (wealth bands + triggers) + net payable after credits. Monthly mode computes recommended TDS by spreading remaining annual payable across remaining months.

๐Ÿงพ Taxpayer & Surcharge Inputs

Tax setup
Rules are embedded for AY 2026โ€“27.
Affects minimum tax (automated).
Tax-free threshold
Adds to tax-free threshold (if applicable).
Computed threshold: โ€”
Surcharge data
Used to pick surcharge band.
Computed surcharge rate: โ€”

๐Ÿ’ผ Income lines (all heads)

Add incomes
Add each source separately and select how it is treated for slab/rebate.
Treatments: Regular slab (included in slab + โ€˜เฆ•โ€™), Reduced rate (taxed at rate%, excluded from โ€˜เฆ•โ€™), Final tax (excluded from slab + โ€˜เฆ•โ€™, shown separately), Exempt (excluded), Firm/AOP share (taxed as regular slab but excluded from โ€˜เฆ•โ€™).
Credits
Offsets payable tax (do not include โ€œfinal taxโ€ as credit unless your policy treats it so).

๐Ÿฆ Section 78 Rebate (Investments/Expenses)

Eligible โ€˜เฆ–โ€™
Enter eligible investments/expenditures (Sixth Schedule Part 3). If you already computed total eligible โ€˜เฆ–โ€™, use override.
If filled, the calculator uses this as โ€˜เฆ–โ€™.
Rebate = min(0.03ร—โ€˜เฆ•โ€™, 0.15ร—โ€˜เฆ–โ€™, 10,00,000). (โ€˜เฆ•โ€™ is auto-computed from your income-line treatments.)

๐Ÿ“Š Detailed breakdown

Press Calculate to see slab, rebate, minimum tax, surcharge, and payable steps.
Net payable (after credits)
BDT 0
Add income lines and calculate.
Tax-free threshold
โ€”
Total income (all)
โ€”
Regular slab income
โ€”
Reduced-rate tax
โ€”
Slab tax
โ€”
Section 78 โ€˜เฆ•โ€™
โ€”
Section 78 โ€˜เฆ–โ€™
โ€”
Rebate
โ€”
Tax after rebate
โ€”
Minimum tax applied
โ€”
Surcharge
โ€”
Credits used
โ€”
Final-tax (info)
โ€”

๐Ÿ”— Legal basis

Section 78 (rebate) definition: bdlaws section 78
Slab/min-tax/surcharge values in this file are set for AY 2026โ€“27 and can be updated later in one โ€œrule packโ€ JSON inside the script.

๐Ÿงฎ Monthly Salary TDS (dynamic)

Salary basis
If you have other income, add it below (annual).
Timing
Rebate inputs reused
Monthly TDS uses the same section-78 investment inputs from Annual tab (โ€˜เฆ–โ€™). Update them there and click Calculate here.

Notes

This spreads remaining estimated annual payable across remaining months (planning view). Employers may require evidence before reflecting rebate/exemptions in withholding.
Recommended monthly TDS
BDT 0
Enter inputs and calculate.
Annual income used
โ€”
Annual payable (before already deducted)
โ€”
Already deducted
โ€”
Remaining payable
โ€”
Months remaining
โ€”

Uses same taxpayer setup

Category, new taxpayer, disabled-child extra, wealth & triggers are taken from Annual tab.