In short: A performance bank guarantee is the security you hand the buyer after you win the tender, and it is the reason a winning bid can still squeeze your bank balance. Indian works tenders commonly ask for something in the 3% to 10% of contract value band (indicative), your bank charges a commission for every year it stays alive, and it holds a margin — often cash or a fixed deposit — against it. It does not expire when you finish the work. It runs through the defect liability period and a claim period after that, and the release is rarely automatic.

Winning a government or EPC contract feels like the hard part is over. Then the work order arrives with a line asking you to furnish a performance guarantee within a set number of days, and a second line saying the work order stands cancelled if you do not.

Owners who have only ever hired machines out on running bills get caught here. The bid was priced on the work. Nobody priced the paperwork.

What a performance bank guarantee actually secures

Your bank writes to the buyer and promises to pay them a stated sum if you do not perform the contract. The buyer gets the comfort of held money without having to hold your money. You get to keep working, at the cost of a commission and a blocked margin.

The important word is unconditional. Most guarantees used in Indian tenders are drafted to be payable on demand, which means the bank pays first and asks questions never. If you believe the buyer invoked it unfairly, that argument happens after the money has gone. Read that clause before you read the percentage.

What it costs you before the machine even starts

There are two separate costs and they behave differently. The commission is an expense. The margin is not — it is your own money, still yours, just unavailable.

What you pay How it behaves Gone or blocked?
Guarantee commission Charged for each year, or part year, the guarantee stays alive. A longer validity costs more. Gone
Margin / cash security Cash or a fixed deposit the bank holds. Often a percentage of the guarantee value, sometimes 100% for a new borrower. Blocked
Stamp duty Payable on the guarantee document. Varies by state. Gone
Processing / issuing charges One-time, per guarantee. Gone
Renewal / extension charges Charged again every time the contract runs late and the guarantee has to be extended. Gone

The margin is the one that hurts a small fleet. If the guarantee is a few lakh and your bank wants a full cash margin because you have no track record with them, that money sits in a deposit until the contract closes. It cannot pay a diesel bill or an EMI in the meantime.

Ask your bank for two numbers in the same conversation: the commission rate and the margin percentage. Owners routinely get quoted the first, budget for it, and then discover the second on the day of issue.

How much the tender will ask for

There is no single national figure, and any article that gives you one is guessing on your behalf. The percentage is set by the buyer in the tender document, and it moves with the department, the contract type and sometimes with how low you bid.

What is broadly true across Indian works tenders is that performance security tends to sit in the 3% to 10% of contract value range (indicative), and that an unusually low bid can attract an additional security on top. Treat those as the shape of the thing, not as your number. Open the tender document, find the clause, and price from that.

Confusion between the different securities is common, so it is worth separating them:

Security When it applies What it protects
Earnest money (EMD) At bidding, before award That you will not walk away from your own bid
Performance guarantee After award, before work starts That you will complete the contract
Mobilisation advance guarantee Only if you take an advance The advance money itself
Retention money Cut from each running bill Defects appearing after completion

A single contract can involve three of these at once. If you are bidding for government work for the first time, read how to bid for government construction tenders alongside this, because the securities are easier to plan for when you see where each one lands in the sequence. The solvency certificate a tender asks for is a third document again, and it proves capacity rather than securing performance.

The validity trap that costs owners the most

Here is where the money stays stuck longer than anyone planned. A performance guarantee is not written to expire on the completion date. It typically runs for the contract period, then through the defect liability period, and then a claim period is added after that so the buyer still has time to make a demand.

Then the contract runs late, as contracts do. The buyer asks you to extend the guarantee. Your bank charges commission again for the extended period. A twelve-month job that slips to twenty months can carry its guarantee for three years or more once the defect liability and claim periods are counted.

Price that in. When you are working out whether a tender is worth bidding, the guarantee cost is not a one-year cost — it is a cost for as long as the paper is alive, and the paper outlives the work.

Getting it released, and why it stalls

Expiry and release are two different events. The guarantee may have expired on its own terms while your bank still holds the margin, because the bank wants either the original document back or a written release from the buyer before it frees anything.

Chasing that release is unglamorous work and it is where small contractors lose money quietly. A few habits help:

Keep a diary of every guarantee you have issued, with its number, value, expiry and the name of the person at the buyer’s office who can release it. Start asking for the release a month before expiry, not after. Get the acknowledgement in writing. And when the original is returned to you, take it to the bank yourself rather than assuming the branch will act on the buyer’s letter.

If your working capital is stuck across several of these at once, that is a cash flow problem rather than a profitability problem, and it has its own answers — bill discounting against your pending bills is one route owners use while the securities sit blocked. If the underlying issue is that the buyer is simply not paying, the payment delay route is the more direct fix.

Before you agree to it

Four things to settle while you still have leverage, which is before you furnish the guarantee rather than after.

Find out whether the buyer will accept a fixed deposit receipt instead of a bank guarantee. Some do, and it can be cheaper because you earn interest on your own blocked money instead of paying commission on it.

Check the exact validity being demanded and add up what it will cost across the full period, including a realistic allowance for the contract running late.

Read the invocation wording. An on-demand guarantee and a conditional one are different risks entirely.

And ask your banker whether the guarantee will eat into the same limit as your working capital. If it does, furnishing it can quietly shrink the overdraft you were relying on to run the job. If you took an advance as well, the mobilisation advance carries its own guarantee and its own recovery schedule, and the two together can tie up more than the contract’s margin.

The bottom line

A performance bank guarantee is not a fee you pay once. It is a commission that runs for years and a block on cash that lasts longer than the work does. Owners who bid well and still run short of money mid-contract are very often the ones who priced the job properly and the securities not at all.

Work out the guarantee cost and the blocked margin before you submit the bid, and treat both as inputs to your price. If a machine loan or a working capital line is part of how you fund that gap, compare equipment finance options and lenders before the work order arrives rather than after.

Rates, schemes, specifications and prices change — confirm current terms with the OEM, dealer, bank or insurer before deciding. Percentages and charges shown here are indicative and vary by bank, state and tender; the tender document and your bank’s sanction letter are the versions that bind you.