Why is my March salary so much lower?

Because declarations and proof submissions land late in the year, and any shortfall is compressed into the remaining months. The last month absorbs whatever is left.

Should I declare interest income to my employer?

Usually yes. It moves the tax into TDS, avoids advance tax instalments and removes the risk of 234C interest.

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TDS on Salary Calculator

Monthly TDS an employer should deduct from salary. Declaring other income to your employer moves the tax into TDS and avoids advance tax obligations and the interest that follows missing them.

Also called: salary tds calculator, monthly tax deduction.

Monthly TDS from here

₹18,929

₹18,929 a month for the remaining 7 months. ₹1,32,500 is still to be deducted of a 1,95,000 liability, 62,500 having been taken so far. No other income declared, so any interest or rental income needs advance tax handling yourself.

Still to deduct

₹1,32,500

Deducted so far

₹62,500

Share of the liability collected

32.05%

Tax on declared other income

₹0

On other income

No other income declared, so any interest or rental income needs advance tax handling yourself.

How this is calculated

Computed from the published rates for the tax year you selected, which is not necessarily the current year. A calculation, not tax advice, and it does not know anything about your circumstances beyond the figures entered.

Method and background

This is what the calculation gives for the numbers you entered. It is an estimate, not advice, and it knows nothing about your situation beyond those numbers. Rules for India change on a published schedule; the effective date is shown on every rule-based tool.

How this is calculated

An employer estimates your annual tax liability and deducts it in equal monthly instalments, adjusting as declarations change. Declaring interest or rental income to the employer folds it into the TDS rather than leaving it for advance tax, which is usually simpler and avoids interest under section 234C for missed instalments. Declarations made late in the year compress the remaining liability into fewer months, which is why the March salary is often much smaller than expected.

the employer spreads the remaining liability evenly over the months left

m: Months remaining

Worked examples

Each of these is asserted on every build. If a change to the engine ever moved one of these answers, the build would fail before the page could print it.

seven months left

Annual tax liability: ₹1,95,000
Months left in the year: 7
TDS already deducted: ₹62,500
Other income declared to the employer: ₹0
Marginal rate: 30%

Monthly TDS from here₹18,929

132,500 over 7 months

Open this example

declaring other income raises the deduction

Annual tax liability: ₹1,95,000
Months left in the year: 7
TDS already deducted: ₹62,500
Other income declared to the employer: ₹1,00,000
Marginal rate: 30%

Monthly TDS from here₹23,214

boundary

Open this example

already fully deducted leaves nothing

Annual tax liability: ₹1,95,000
Months left in the year: 7
TDS already deducted: ₹1,95,000
Other income declared to the employer: ₹0
Marginal rate: 30%

Monthly TDS from here₹0

degenerate case

Open this example

Method and limits

What it assumes

An even spread over the remaining months, which is standard practice.

What it deliberately does not model

Employers cannot account for losses or deductions you have not declared.
Only one employer can consider the full basic exemption, which matters if you changed jobs mid-year.

Formula version 1.0.0 · definition 1.0.0 · India · Report a problem with this calculator

Frequently asked questions

Why is my March salary so much lower?: Because declarations and proof submissions land late in the year, and any shortfall is compressed into the remaining months. The last month absorbs whatever is left.
Should I declare interest income to my employer?: Usually yes. It moves the tax into TDS, avoids advance tax instalments and removes the risk of 234C interest.