A security deposit in tender is the money your client keeps after the work is awarded, as cover against you not finishing it or not fixing what goes wrong afterwards. On central government work Rule 171 of the General Financial Rules, 2017 sets the performance security as a percentage of the contract value, and a Ministry of Finance memorandum of 12 November 2020 brought that down to 3% for contracts the rule covers. On a ₹50 Lakh contract at 5%, that is ₹2.5 Lakh (indicative) sitting with someone else for two years or more, and most owners never price it.

What a security deposit in tender actually secures

Earnest money answers one question: is this bid serious. The security deposit answers a different one: will this contractor finish the job and stand behind it afterwards. That is why the two live at opposite ends of the contract. The earnest money goes in with your bid and comes back to the losing bidders once the tender is decided, which is the ground covered in our note on EMD in a tender. The security deposit arrives only after you have won, and it stays until long after the machines have left site.

For a machine owner that difference matters more than it does for a labour contractor. Your capital is already in the asset. A hydra or an excavator earning on a two-year contract is also financing 5% of that contract value, interest-free, for the client.

Where the money actually comes from

Two routes, and most public works contracts use both at once.

The first is a lump sum you lodge before the agreement is signed, usually as a demand draft, a fixed deposit receipt pledged to the client, or a bank guarantee. The second is a percentage cut from every running account bill you raise, running until the total reaches the ceiling in the contract. The second route is the one that hurts, because it takes money you have already earned and the department’s engineer has already certified.

Where that deduction is called retention rather than security deposit, the mechanics are identical and the sums are the same money by a different name. Our piece on retention money in construction contracts works through the deduction side in detail.

Money the client holds When it goes in When it comes out
Earnest money / bid security With the bid, before award After the tender is decided
Performance security Before the agreement is signed On completion, per the contract
Deduction from running bills Every bill, until the ceiling Part on completion, part after the defect period
Mobilisation advance recovery Every bill, if you took an advance Not a deposit — it is your own advance coming back

The last row is there because owners routinely read an advance recovery line on a bill as another deposit and panic. It is not. That is the mobilisation advance being repaid out of the work you are doing.

The percentage, and why the tender document beats the rule

Rule 171 of the General Financial Rules, 2017 governs central government procurement and fixes performance security as a band of the contract value. The Ministry of Finance memorandum of 12 November 2020 reduced it to 3% of the contract value, after representations that blocked capital was stopping contractors from bidding at all. Several states followed. Kerala’s finance department order of 7 January 2021 cut performance security from 5% to 3% and earnest money from 2.5% to 1.5% for public works in the state.

None of that guarantees the number in front of you. The rules bind central departments; state PWDs, municipal bodies, PSUs and private EPC clients write their own procurement manuals, and courts have seen contracts where the security actually fixed in the agreement sat well above the figure the department’s own circular allowed. Read the clause, not the circular, and if the two disagree, raise it at the pre-bid meeting when it can still be changed.

What it costs you, in money rather than principle

Take a ₹50 Lakh contract running twenty-four months, with 5% held as security deposit. That is ₹2.5 Lakh (indicative). If your working capital costs 14% a year, holding that sum for two years costs about ₹70,000 in interest you pay on money you have already earned. Against a margin of 8% to 12% on a contract of that size, the deposit alone can eat a tenth of the profit.

The deduction also lands at the worst moment. It comes out of your first bills, exactly when diesel, wages and the first EMI on the machine are all due. Owners fighting that squeeze usually need a working capital loan at 14% to fund a deposit held against them at nil, which is a poor trade and worth avoiding by pricing the cost into the rate instead.

Getting it back

The release is a process, not an event, and it stalls for ordinary reasons rather than bad faith. Budget lapses at the year end. The engineer who certified your work is transferred. The defect period closes but nobody records that it closed.

Four things move it. Apply in writing and quote the clause number, because an application that names the clause is harder to shelve than one that asks politely. Close out the defect list in writing so no open item can be used as a reason to wait. Get the no-dues or no-claim certificate settled early, and read what you are signing before you sign it. Where the contract permits substitution, swap the cash for a bank guarantee at the start so the money is never trapped in the first place.

If you bid public work regularly, the deposit is not an irritation to be managed job by job. It is a standing line in your working capital, and it belongs in your rate. Browse current government and infrastructure tenders and read the security clause before you price the bid, not after you win it.

The bottom line

A security deposit in tender is your own money, held by someone else, for years. The rule sets a band, the memorandum of November 2020 pushed central contracts down to 3%, and your tender document decides what actually applies. Work out what the deposit costs you at your own cost of capital, price it into the rate, and swap cash for a guarantee wherever the contract allows it.

If the deposit is what is squeezing your month rather than the work itself, compare equipment finance and working capital options and speak to a lender before the next bill cycle rather than after it.

Rates, schemes, specifications and prices change — confirm current terms with the OEM, dealer, bank or insurer before deciding. The percentages quoted here are drawn from the General Financial Rules and the government orders named above, and the figure that binds your contract is the one printed in your own tender document; confirm it with the tendering authority before you bid.