Loan Repayment

Zero prepayment penalty is not automatic for every single loan; it is mandated by the Reserve Bank of India (RBI) only when specific conditions are met.  
The Exact Conditions for Zero Penalty (RBI Mandate)
Under RBI regulations, banks, housing finance companies (HFCs), and NBFCs cannot charge any foreclosure or part-prepayment fee if your loan meets both criteria:
The loan is on a Floating Interest Rate (linked to an external benchmark like the repo rate).  
The borrower is an Individual (either sole or with individual co-applicants) taking the loan for non-business purposes.  
What Can Disqualify You (Exceptions to Watch Out For)
If your loan falls into any of these categories, the lender can legally charge a prepayment penalty (typically 2% to 4% + GST on the prepaid amount):
Fixed-Rate Loans: If you choose a fixed interest rate, banks are allowed to levy prepayment penalties.  
Hybrid / "Teaser" Loans: Loans with fixed rates for the first 2–3 years that convert to floating rates later. If you prepay during the initial fixed period, penalties often apply.
Non-Individual Borrowers: If you apply as a sole proprietorship, partnership firm, company, or include a commercial entity as a co-borrower, the RBI zero-penalty protection does not apply.
4 Clauses to Check in Your Sanction Letter
Before signing, review your loan sanction letter and Key Fact Statement (KFS) for the following:
Interest Type Clause: It must explicitly state "Floating Rate of Interest" linked to an external benchmark (EBLR/RLLR).
Foreclosure / Part-Prepayment Charges: The schedule of charges must list "NIL" or "Zero" for part-prepayment and full foreclosure.
Lock-In Period Clause: Ensure there is no minimum lock-in period (e.g., stating you cannot prepay within the first 6–12 months).  
Source of Funds Restrictions: Ensure there is no clause stating penalties apply if you prepay via a loan transfer/refinance versus your own savings.  
As long as you are borrowing as an individual on a standard floating-rate retail home loan, you have the full statutory right to prepay as much and as often as you want without paying a single rupee in penalties.