Calculating TDS (Tax Deducted at Source) on salaries — and reporting it correctly — is one of the most common compliance tasks for any organization with employees. It starts with calculating TDS on monthly salary at the average rate under Section 86, then depositing the deducted amount to the government treasury. This is just the first step; several other filings follow throughout the year.

Getting this right matters because non-compliance carries steep penalties. Missing a deposit deadline attracts a manageable 2% simple interest charge. But calculating TDS incorrectly, or missing a required filing, can trigger penalties at the corporate standard tax rate — a much costlier mistake.

Tax Brief
  • Employers must deduct TDS from salary every month using the “average rate” method under Section 86, based on yearly gross salary.
  • Taxable income is found by deducting the salary exemption (1/3 of gross salary, capped at BDT 500,000) from yearly gross salary.
  • A flat rebate estimate (3% of taxable income) is applied at the TDS stage — no investment proof is needed upfront; any shortfall is settled by the employee at return filing.
  • Net tax liability is calculated using the upcoming assessment year’s tax-free limit and slab rates, then divided by 12 for the monthly TDS amount, with a final adjustment made in June.
  • Employers must also issue salary certificates and submit quarterly and annual withholding statements to the tax office, as prescribed under the Withholding Tax Rules 2026.

In this article, we’ll walk through a simple example to cover the complete TDS calculation and reporting process step by step. Keep in mind the exact requirements may vary depending on your specific circumstances.

Example

Mr. Karim, an employee of a private company, will receive the following benefits for the Income Year 2026-27:

  • Monthly Basic Salary: BDT 60,000
  • House Rent: 40% of basic salary (BDT 24,000)
  • Medical Allowance: 10% of basic salary (BDT 6,000)
  • Conveyance Allowance: 10% of basic salary (BDT 6,000)
  • Employer’s Contribution to Recognized Provident Fund (RPF): 10% of basic salary (BDT 6,000). Mr. Karim also contributes the same amount.
  • Festival Bonuses: Two bonuses, each equivalent to one month’s basic salary.
Taxpert Tip
Since the exemption applies to gross salary as a whole, there’s no need to segregate salary components (basic, house rent, medical, etc.) before calculating TDS. Simply use total salary income — regardless of which salary breakdown you follow, your TDS calculation will arrive at the same result, only the procedure differs.

Let’s start the monthly TDS calculation on salary, step by step.

Step 1: Calculating Taxable Income

First, calculate total taxable income. In our example, we’ve used the monthly salary income. Since we’re calculating tax on the full year’s salary income, multiply the monthly payment by 12 to get the yearly gross salary. Doing so, you’ll arrive at BDT 1,344,000 as the gross salary.

Once you have the gross salary income, divide it by 3 to determine the exemption amount. If one-third of the gross salary is below BDT 500,000, that amount is your exemption. But if one-third exceeds the maximum cap, the exemption is capped at BDT 500,000.

Taxpert Tip
Use a simple single-page Excel worksheet with the 1/3 exemption test built in as a formula — you’ll reuse it every month and every year, since only the tax-free limit and slab rates change with each Finance Act. Don’t rebuild it from scratch each time.

In our example, the exemption amount works out to BDT 448,000. After deducting this exemption, the taxable income is BDT 896,000.

Step 2: Calculating Tax Rebate

Before moving on to calculate the tax liability on taxable income, we first calculate the tax rebate on eligible taxable income.

Since you’re calculating TDS on salary from the first month of the financial year — i.e., July — you won’t yet have any information about the employee’s actual investment amount. So at this stage, don’t concern yourself with whether the employee has invested or plans to invest.

Instead, simply calculate the tax rebate by applying 3% to the taxable income. In our example, applying this rate to BDT 896,000 gives a tax rebate of BDT 26,880.

Taxpert Tip
The 3% flat estimate at the TDS stage is a starting assumption, not a promise — you don’t need investment proof to apply it. If an employee doesn’t end up investing, that’s their decision; they settle the difference at return filing, not you. If they submit proof mid-year, you can revise their monthly TDS from that point forward instead of waiting until June.

Step 3: Calculating Monthly TDS on Salaries

We now have the taxable income and tax rebate amount, so let’s calculate Mr. Karim’s total tax liability to determine the monthly TDS amount. Important note: although you’re paying salary in the 2026-27 income year, the employee will file their return for the 2027-28 assessment year.

Since the National Board of Revenue publishes tax rates for the upcoming assessment year in advance, you should apply the 2027-28 assessment year’s tax-free limit and slab-wise tax rates when calculating the tax liability.

As per the Finance Act 2026, for the Assessment Year 2027-28 (Income Year 2026-27), the tax-free limit for a male taxpayer is BDT 400,000. We’ll apply the new slab-wise tax rates in below table.

IncomeRateTax (BDT)
On first BDT 400,0000%
On next BDT 300,00010%30,000
Balance BDT 196,00015%29,400
Total Tax Liability59,400

Now deduct the tax rebate from the tax liability, and you’ll get a net tax liability of BDT 32,520. Divide this by 12, since we’re deducting TDS from the monthly salary, and the monthly TDS on salary comes to BDT 2,710 — you can round this to BDT 2,700. In the final month (June), you can adjust the TDS amount when making the last payment of the year.

So far, we’ve calculated the average monthly TDS amount. But as mentioned, a final adjustment is needed in the last month. It’s also worth noting that beyond this year-end adjustment, there are other situations that may require you to revise your TDS calculation during the income year, or at year-end. Let’s look at these.

Adjustments and Special Considerations

Salary Changes

If there are any changes to an employee’s salary or benefits during the year (e.g., increments), adjust the TDS calculation accordingly for the remaining months.

Year-End Reconciliation

At the end of the income year (June), perform a final reconciliation. Compare the total TDS deducted throughout the year against the actual tax liability based on the full year’s income. Make any necessary adjustments — deducting more or refunding excess TDS — in the final salary payment.

Advance Income Tax (AIT) on Car

If an employee owns a personal car and has paid advance tax on it (e.g., BDT 25,000), this AIT can be offset against their total tax liability. In Mr. Karim’s case, if he had paid BDT 25,000 in AIT on his car, his net tax liability would become BDT 32,520 – BDT 25,000 = BDT 7,520. His monthly TDS would then be BDT 7,520 / 12 = BDT 626.67.

With that, you’ve completed the TDS calculation on salary. But calculating and depositing TDS is only part of the job — you also need to fulfill the salary tax reporting requirements under the Income Tax Act 2023. Let’s look at these below.

Essential Tax Reporting Requirements Related to TDS on Salaries

Deducting and depositing TDS is only one part of your responsibility. You also need to submit various statements and returns to the tax authority throughout the year.

Salary Certificate

You must issue a salary certificate to each employee, detailing their total salary paid, the tax deducted and deposited, the tax challan number and date, income year, and their personal details. The specific information required is outlined in the Withholding Tax Rules 2026.

Statement of Deduction of Tax Under the Head “Salaries”

This statement is part of the monthly withholding tax return. It should only include the tax deducted from eligible employees and their detailed salary information for previous month. The prescribed format is provided under Rule 13, Schedule (Ga) of the Withholding Tax Rules 2026.

Statement Regarding the Payment of Salary

This annual statement provides comprehensive information about total salary payments for the entire year. Its format is specified under Rule 13, Schedule (Cha) of the Withholding Tax Rules 2026. It’s vital to ensure the total salary amount reported in this statement reconciles with your company’s audited financial statements to avoid potential scrutiny during tax assessment. This statement must be submitted to the tax office in September each year.

Statement Regarding Filing of Return by Employees

This statement must be submitted to the tax office in April each year. To prepare it, you’ll need employees to provide acknowledgments that they’ve submitted their individual income tax returns. The necessary information is typically drawn from these acknowledgment receipts. The prescribed format is found under Rule 13, Schedule (Chha) of the Withholding Tax Rules 2026.

By diligently following these steps and complying with the reporting requirements, you can ensure accurate TDS calculation and maintain good standing with the tax authorities, avoiding potential penalties. Staying updated with the tax compliance calendar is always a good practice!

Frequently Asked Questions About TDS on Salary

Do I need to deduct TDS on salary every month, or only at year-end?+

TDS on salary must be deducted every month at the time of payment, using the average rate calculated under Section 86. Year-end is only for reconciliation — comparing total TDS deducted against actual tax liability and adjusting the final payment, not for a one-time calculation.

What happens if I deduct the wrong amount of TDS from an employee’s salary?+

Under-deduction can expose the employer to penalties at the corporate standard tax rate, since the responsibility to withhold correctly sits with the employer, not the employee. This is why a year-end reconciliation and mid-year adjustments for salary changes are so important.

Do I need proof of an employee’s actual investments before calculating their TDS?+

No. At the start of the year, you apply a flat rebate estimate to taxable income without needing investment proof. If an employee doesn’t end up investing, the shortfall is settled by the employee at return filing time, not by the employer.

Which tax rates should I use — the current year’s or the upcoming assessment year’s?+

Since the employee will file their return for the following assessment year, you should apply that upcoming assessment year’s tax-free limit and slab rates when calculating monthly TDS, not the rates for the year in which you’re currently paying salary.

What statements do employers need to submit to the tax office besides depositing TDS?+

Employers must issue salary certificates, submit a quarterly Statement of Deduction of Tax, an annual Statement Regarding Payment of Salary in September, and a Statement Regarding Filing of Return by Employees in April, each in the format prescribed under the Withholding Tax Rules 2026.

Want This Done Right, Every Month — Without the Guesswork?

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