- Under Section 128 of the Indian Contract Act, a guarantor’s liability is co-extensive with that of the principal debtor.
- If the primary borrower misses an EMI, the default is reported with identical severity on the guarantor’s credit report.
- Banks deduct 100% of the guaranteed loan’s EMI from your personal debt-to-income (FOIR) capacity.
- Exiting a guarantee requires formal bank credit committee approval and suitable collateral or guarantor substitution.
The Legal Reality: You Are Equally Liable for Every Rupee
Many individuals agree to sign as a loan guarantor for a relative, friend, or business partner believing it is merely a character reference. Under Indian law, this assumption is dangerous.
Section 128 of the Indian Contract Act, 1872 explicitly establishes that the liability of the surety is co-extensive with that of the principal debtor unless provided otherwise by contract. In plain terms: if the borrower defaults, the bank can legally demand 100% repayment from you immediately without exhausting all legal remedies against the borrower first.
Credit Bureau Cross-Infection & FOIR Constraints
The moment you sign as a co-borrower or financial guarantor, the loan appears on your credit report under the Ownership Type "Guarantor" or "Joint".
Every missed EMI by the primary borrower creates a DPD flag on YOUR credit report. Furthermore, when you subsequently apply for your own home loan, the mortgage underwriter adds the full EMI of the guaranteed loan to your Fixed Obligation to Income Ratio (FOIR), slashing your personal borrowing limit by 40% to 60%.
Indian Contract Act, 1872 (Sections 126–147: Contracts of Guarantee) & RBI Master Circular on Wilful Defaulters (Guarantor Provisions).

