Insurance Surety Bond vs Line of Credit: What Contractors Should Know
TL;DR
A line of credit gives you cash for the work. An insurance surety bond gives you the guarantee that tenders ask for. You need both, and neither replaces the other.
A bank guarantee uses part of your bank limit and locks cash margin. An insurance surety bond is issued by an insurer, so it is not issued from your bank limit.
Keep the line of credit for wages, diesel and material. Use an insurance surety bond for tender guarantees where the tender accepts it.
An insurance surety bond guarantees contract work. It does not provide cash or guarantee loans. Check each tender before you apply.
A contractor needs cash to run the work. A contractor also needs a guarantee to bid for and hold a contract. A line of credit gives you the cash to run the work. An insurance surety bond gives you the guarantee to win and hold the contract. Each one does a different job, and a contractor needs both.
This guide explains both, how banks bundle them, and how to use them together.
What Is a Line of Credit for a Contractor
A line of credit is a limit your bank sanctions for your business. You use it to fund your work.
Banks use different names for it:
Working capital limit
Cash credit (CC)
Overdraft (OD)
Bank of India’s contractor scheme uses the term “Line of Credit” itself. It describes it as a fund-based working capital limit plus bank guarantees and letters of credit.
A contractor limit has two parts:
Fund-based (FB): Cash. Cash credit, overdraft or term loan. You draw the money and pay interest on it.
Non-fund-based (NFB): No cash. The bank gives a promise, not money. Bank guarantee (BG) and letter of credit (LC) come under this.
In its August 2020 circular on current accounts, the RBI counts a borrower’s “exposure” as the sum of sanctioned fund-based and non-fund-based credit facilities.
What Is an Insurance Surety Bond
An insurance surety bond is a three-party contract. As Business Standard explained when IRDAI issued its guidelines, one party (the surety) guarantees the performance of a second party (the principal) to a third party (the obligee). The surety is an insurance company.
In simple words:
You (the principal): the contractor who must do the work
The project owner (the obligee): the body that gave you the contract
The insurer (the surety): the insurance company that backs your promise
IRDAI’s rules for surety insurance came into force on April 1, 2022. Cyril Amarchand Mangaldas, a law firm, explains that a surety contract from an Indian insurer works both as a contract of guarantee and as an insurance contract. The insurer can step into the owner’s position and recover from you what it pays out. This is called subrogation.
The bond types IRDAI allows include bid bonds, performance bonds, advance payment bonds and retention money bonds, as well as customs and court bonds. Our guide on the types of insurance surety bonds explains each one for contractors.
Line of Credit vs Insurance Surety Bond: What Each One Does
Trade finance uses the same split. The DGFT trade finance guide says funded products give money. Unfunded products do not give money. They back the deal by guaranteeing performance.
A line of credit is funded. An insurance surety bond works like an unfunded product.
Line of Credit | Insurance Surety Bond | |
What it gives you | Cash, plus bank guarantees | The guarantee a tender asks for, from an insurer |
Who issues it | Bank | Insurance company |
What you pay | Interest on cash you draw, plus fees | A premium |
Cash margin | Yes on guarantees. Bank of India asks a minimum of 15%. Indian Bank asks 10% | The insurer may ask for collateral. It depends on the insurer and the case |
Issued from your bank limit | Yes | No. It is issued by an insurer |
Can pay for wages, diesel, material | Yes | No. Cash comes from the line of credit |
When the owner claims | The bank pays | Bonds can be conditional. The insurer may check the claim first |
They do different jobs. The line of credit is built to fund your work. The insurance surety bond is built to guarantee your work. When a tender needs a guarantee, the insurance surety bond provides it without using your bank limit, and the line of credit stays free for cash.
Example: How Banks Bundle Cash and Guarantees in One Limit
Some bank contractor schemes sell one package, with cash and guarantees in the same limit. Below are three examples. They show how these banks do it, not how every bank does it. All details are from the banks’ own pages, checked in October 2026.
Bank of India (Star SME Contractor Credit)
Limit: ₹10 lakh to ₹500 lakh
Size of the limit: 30% of your last two years’ average turnover
Of that, two thirds is fund-based. One third is non-fund-based, such as BG and LC
Margin: minimum 20% on the fund-based part, minimum 15% cash margin on the non-fund-based part
Security: first charge on the firm’s unencumbered assets, plus collateral so that asset cover of 1.50 is maintained
You need at least 3 years in business and audited financial statements
Bank of Maharashtra (Mahabank Scheme for Contractors)
Fund-based: term loan and cash credit
Non-fund-based: letters of credit, bank guarantee, deferred payment guarantee
Limit: ₹10 lakh to ₹10 crore
Margin: minimum 20% for micro and small firms, 25% for medium firms
Indian Bank (IB Contractors)
Fund-based: secured overdraft, cash credit, term loan
Non-fund-based: bank guarantee and letter of credit
Limit: up to ₹10 crore per borrower and ₹20 crore per group, counting fund-based and non-fund-based together
Margin: 10% against guarantees and letters of credit
For a bank guarantee, you give a counter guarantee and a cash margin in FDR. Anything the cash margin does not cover must be covered by the value of your security
For cash credit, the bank takes 100% collateral in property or liquid security
You need at least 3 years in business and continuous profit for the last 2 years
Here are the same pages: Bank of India, Bank of Maharashtra and Indian Bank.
What this means in simple terms (Bank of India example)
At Bank of India, the guarantee part is one third of a limit that is 30% of your turnover. That is 10% of your two-year average turnover. Every bank guarantee must fit inside that space. At least 15% of each guarantee must be cash.
This is one example. Other banks use different numbers, so check your own sanction letter.
How an Insurance Surety Bond Helps a Contractor
An insurance surety bond is built for the job tenders care about most: guaranteeing your work to the project owner. Here is what that gives you.
An insurer issues it. Your bank limit is not the source. The non-fund-based space in your limit stays free. This is a deduction from who the issuer is, not an official rule.
It covers the guarantees tenders ask for. Bid bonds, performance bonds, advance payment bonds and retention money bonds.
Government tenders can accept it. The February 2, 2022 GFR amendment says insurance surety bonds may be accepted for bid and performance security, as the law firm’s 2024 review notes.
Margin works differently. The banks above ask for 10% to 15% cash margin on guarantees. An insurer may ask for collateral instead. How much depends on the insurer and your case.
Your line of credit stays free for cash. Guarantees move out of the bank limit, so the limit can keep funding wages, diesel and material.
Limitations of an Insurance Surety Bond
These are the limitations to know before you apply for an insurance surety bond.
It is not a cash product. Wages, diesel and material come from your line of credit.
It cannot guarantee a loan. The law firm notes that financial guarantees are not permitted in any form in surety insurance. This includes any bond or guarantee covering loans, leasing or any arrangement to raise finance.
It covers work in India only. Payments under it are made in rupees.
It works only where the tender accepts it. The word in the GFR amendment is “may”. Check each tender document. Our guide on the insurance surety bond clause in government tenders shows what to look for.
Insurers also check you before they issue a bond. The same review says insurers ask contractors for a lot of data about their business.
Limitations of a Line of Credit
These are the limitations of a bank line of credit, based on the three bank pages above.
Guarantee space is limited. Only the non-fund-based part can be used for guarantees. At Bank of India that is one third of the limit.
Guarantees need margin. Bank of India asks for at least 15% cash margin. Indian Bank asks for 10% plus a counter guarantee.
The total is capped. Bank of India goes up to ₹500 lakh. Indian Bank goes up to ₹10 crore per borrower.
Banks ask for security. Bank of India takes a first charge on assets plus collateral. Indian Bank takes full collateral for cash credit.
Banks check your history. Bank of India asks for 3 years in business and audited statements. Indian Bank asks for 3 years in business and continuous profit for the last 2 years.
If your guarantee space is already full, read What Happens When Your Bank Guarantee Limit Is Full.
How to Use a Line of Credit and an Insurance Surety Bond Together
Contractors get the best result when each product does its own job.
Keep the line of credit for cash. Wages, diesel, material and equipment.
Use an insurance surety bond for tender guarantees, where the tender accepts it. Bid security (EMD), performance security, advance payment and retention money.
Here is the difference it makes.
With a bank guarantee
The guarantee is issued from your bank limit
It uses part of the non-fund-based space
Cash margin is locked against it
With an insurance surety bond
The bond is issued by an insurer, not from your bank limit
The non-fund-based space in your limit is not used for it
You pay the insurer a premium, and the insurer may ask for collateral
For what premiums look like, see our insurance surety bond cost guide.
Line of Credit vs Letter of Credit: Are They the Same?
The names sound alike, but they are different things.
Line of credit: the whole limit your bank gives you
Letter of credit (LC): one instrument inside that limit
The DGFT trade finance guide explains an LC as a bank’s commitment to pay the seller once the terms are met and the right documents are shown. It is used mostly in trade. The three banks above list the letter of credit in the non-fund-based part, next to the bank guarantee.
Which One to Use for Each Need
Match your need to the right product.
You need money for wages, diesel, material or equipment: a line of credit (cash credit, overdraft or term loan)
The tender asks for bid security (EMD): an insurance surety bond, if the tender accepts it. Otherwise a bank guarantee
You won the tender and need performance security: an insurance surety bond, if the tender accepts it. Otherwise a bank guarantee
You received an advance from the project owner: an advance payment bond
You need a guarantee for a loan: an insurance surety bond cannot do this
Most contractors need both. The line of credit funds the work. The insurance surety bond guarantees the work.
How to Move Tender Guarantees Out of the Bank Limit
Follow these five steps to shift your tender guarantees to an insurance surety bond.
Step 1: List your guarantees: Write down each tender, the guarantee amount and the expiry date.
Step 2: Check what each tender accepts: Open the bid security and performance security clause. Look for “insurance surety bond” next to bank guarantee.
Step 3: Check your eligibility: Insurers ask for data about your business and past work. Keep your documents ready before you apply.
Step 4: Apply to an IRDAI-licensed insurer: Only an insurer licensed by IRDAI can issue the bond.
Step 5: Keep your bank line for cash: Keep your line of credit for cash. The insurance surety bond now handles the tender guarantee, so your limit stays free for the work.
Summary: Line of Credit vs Insurance Surety Bond
Here are the main points from this guide.
A line of credit gives you cash for the work. An insurance surety bond gives you the guarantee for the contract.
Banks such as Bank of India put both into one limit. Guarantees use part of that limit and need cash margin.
An insurance surety bond is issued by an insurer, so it is not issued from your bank limit.
An insurance surety bond guarantees contract work. It does not provide cash or guarantee loans.
Use the line of credit for cash. Use an insurance surety bond for tender guarantees where the tender accepts it.
FAQs
Can I use my cash credit limit for a bank guarantee?
No. Bank guarantees come from the non-fund-based part of your limit. Cash credit is the fund-based part.
Does an insurance surety bond reduce my cash credit limit?
An insurance surety bond is issued by an insurer, not by your bank. It is not issued from your bank limit.
Can an insurance surety bond guarantee my loan?
No. Financial guarantees, including those covering loans, are not permitted in surety insurance in India.
Does an insurance surety bond need collateral?
It can. The law firm’s review refers to collateral requirements for these bonds. How much depends on the insurer and your case. Ask the insurer.
Do I need to close my bank limit if I take an insurance surety bond?
No. Keep it for cash. The insurance surety bond takes care of your tender guarantees.
