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Form 12BB (now Form 124): the declaration that reduces your salary TDS

Employers deduct tax on salary based on what you tell them. Form 12BB was the standard way to declare rent, travel, home loan interest and tax-saving investments with proof. Under the Income-tax Rules, 2026, the same declaration is Form 124.

Reviewed by Vijay Dhawan, Managing Partner, LexVerge LLP · Published

Quick answer

Form 12BB, now Form 124 under the Income-tax Rules, 2026, is the declaration employees give their employer to claim HRA, LTA, home loan interest and deductions such as 80C for salary TDS. Landlord PAN is needed if rent exceeds ₹1 lakh a year. It matters mainly in the old regime.

  • Form 12BB is now Form 124
  • Landlord PAN above ₹1 lakh rent a year
  • Missed proofs can still be claimed in the return

Official source: Income Tax Department: FAQs on forms under the Income-tax Rules, 2026

What you declare

ItemWhat to giveRegime
House rent allowanceRent paid, landlord’s name and address; landlord’s PAN if rent exceeds ₹1 lakh a year; rent receipts or agreementOld only
Leave travel concessionTravel tickets or boarding passes for the journey; two journeys in a block of four calendar years (2026 to 2029 is the current block)Old only
Interest on home loanLender’s name, address and PAN; interest certificateOld only for self-occupied home
Section 80C and other deductionsProof of PPF, ELSS, insurance premium, tuition fees, NPS, health insurance, education loan interestOld only, except employer NPS

In the new regime almost none of this reduces tax, so most employees there only confirm their regime. See the full list of deductions in our Section 80C guide.

The yearly cycle

  1. April: choose your regime and submit a provisional declaration of planned rent and investments.
  2. Monthly: the employer deducts TDS based on the declaration.
  3. December to February: submit Form 124 with actual proofs, by the deadline your payroll team sets (often in January).
  4. February and March: the employer recomputes the year’s tax and adjusts TDS in the last months. Missing proofs mean higher deductions in these months.
  5. By 15 June: you receive Form 130 (formerly Form 16); see our Form 16 guide.

HRA: the details that matter

  • Exempt HRA is the least of: HRA received; rent paid minus 10% of salary; and 50% of salary in the eight metro cities from FY 2026-27 (Delhi, Mumbai, Kolkata, Chennai, Bengaluru, Hyderabad, Pune, Ahmedabad) or 40% elsewhere. Work it out with our HRA calculator.
  • Rent paid to parents is allowed if they actually own the house and declare the rent as their income. Rent to a spouse is routinely questioned.
  • If the landlord has no PAN and rent exceeds ₹1 lakh, a declaration from the landlord to that effect is needed.
  • Rent above ₹50,000 a month means you must also deduct 2% TDS from the rent; see our TDS on rent guide.

Missed the deadline?

Nothing is lost. If proofs reach payroll too late, your employer deducts more TDS and your Form 130 shows fewer deductions. You claim them in your return, provided you are in the old regime, and the excess TDS comes back as a refund. Keep the proofs; the tax department can ask for them, and large HRA or 80C claims that do not appear in Form 130 are a common trigger for questions.

Checklist before you submit

  • Rent receipts for every month, or the rent agreement with bank transfers, matching the rent declared.
  • Landlord PAN if annual rent is above ₹1 lakh; if the flat has two owners, both names and each one’s share.
  • Home loan interest certificate for the financial year, showing interest and principal separately, and the pre-construction interest schedule if any.
  • Premium receipts in your name, spouse’s or children’s, with policy numbers.
  • ELSS and PPF statements showing investments made within the financial year.
  • Tuition fee receipts showing the tuition component separately.
  • Health insurance premium receipts, separately for parents if claimed.
  • Travel tickets for LTA, in your name or your family’s, for the shortest route by the eligible mode.

Frequently asked questions

What is Form 12BB?

The declaration employees give employers to claim HRA, LTA, home loan interest and deductions for salary TDS. Under the Income-tax Rules, 2026 it is Form 124.

Is landlord PAN mandatory for HRA?

Yes, if rent paid exceeds ₹1 lakh a year. Without a PAN, a declaration from the landlord is needed.

Do I need to submit Form 12BB in the new regime?

Largely no, since HRA, LTA and most deductions are not available. You only need to confirm the regime and any employer NPS arrangement.

What if I miss the proof submission deadline?

Your employer deducts more TDS, and you claim the deductions in your return (old regime) to get a refund.

Reviewed by Vijay DhawanManaging Partner, LexVerge LLP · checked against current MCA, GST and Income-tax rules

Proofs missed or regime unclear?

A FilingBase CA claims the right deductions in your return and recovers excess TDS, from ₹499.

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Official references

The statutory sources behind this page. We keep our guidance aligned to them — verify anything time-sensitive directly.

Content on this page is reviewed by a chartered accountant or advocate at LexVerge LLP. It is general guidance, not advice on your specific facts.

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