Bank Guarantee (BG) in Construction Contracts

Theme: Business Framework; Module: Banks & Insurance

Author: Dr. Pradeep Reddy Sarvareddy

Published Date: 07 Jan 2026

Bank Guarantees (BGs) are a part & parcel of Government Construction Contracts.  Further, the risk of invocation (whether such invocation is justified or not) and even the threat of invocation, is a serious concern to Contractors as such a situation can result in serious financial consequences and cause a chain reaction of cash flow failures.  This article introduces the different types of Bank Guarantees commonly used in construction contracts, their basic legal differences, and the limited circumstances in which courts may intervene in cases of BG invocation.

A Bank Guarantee is a “Guarantee” issued by a third-party (i.e., a Bank) on behalf of a Contractor to the Government Department.  The Government Department can directly invoke the Bank Guarantee and the Bank has to pay the Government Department.  Thus, the Bank Guarantee becomes an independent Contract between the Bank and the Government Department.  The Contractor or the Bank cannot cancel the Bank Guarantee before the expiry of the Bank Guarantee.  This seems very simple, but this is a very critical detail.  For this reason, Courts do not support the Contractor most of the times and instead allow the Government Department to invoke the Bank Guarantee.

Purpose of Bank Guarantee:

  • Bid Security / Earnest Money Deposit (EMD): To ensure that the Contractor signs the Contract.  Otherwise, the time and effort of the Department in the tendering may be wasted.  Also, to avoid cartel among Contractors after the Price Bid is opened.
  • Performance Bank Guarantee (PBG): To ensure that the Contractor performs the Contract without abandoning the Work after entering into the Contract.
  • Advance Payment Bank Guarantee: To secure the Advance Payment of money provided to the Contractor
  • Retention / Defect Liability Security Bank Guarantee: To ensure that the Contractor works during the Defects Liability Period.

How a Bank Guarantee Works:

  • The Contractor gets the Bank Guarantee issued by the Bank.
  • Then the Contractor submits the Bank Guarantee to the Department.
  • If needed, the Bank Guarantee can be amended or changed but only if the original Bank Guarantee is submitted back to the Bank.
  • The Bank Guarantee may be renewed or extended by the Contractor before it expires.
  • But the Bank Guarantee cannot be renewed or extended by the Bank or the Department, unless specifically written in the Bank Guarantee.
  • The Department can invoke the Bank Guarantee at any time.
  • On the other hand, if all obligations are met, the Bank Guarantee is returned to the Contractor by the Department.
  • After the Contractor surrenders the original Bank Guarantee to the Bank, the Bank closes the Bank Guarantee and releases the Contractor’s securities.

Types of Bank Guarantee

Unconditional Bank Guarantees

  • In most government contracts, the Department requires an unconditional Bank Guarantee.
  • “Unconditional” means the Bank must pay the Department immediately when asked, without asking for any reasons or supporting documents.
  • The Department simply sends a written demand, and the Bank is obligated to release the money.
  • The Bank cannot refuse payment or delay by questioning the Department’s claim.
  • This makes the process fast and reliable for the Department and is why unconditional Bank Guarantee are preferred by the Government.

Conditional Bank Guarantees

  • Conditional Bank Guarantee are much less common in government contracts.
  • With a conditional Bank Guarantee, the Bank will only pay if certain conditions are met.
  • The Department must provide extra proof or documents (such as certificates, third-party verification or evidence of breach) before the Bank will release the funds.
  • The Bank reviews these documents and checks if the conditions in the Bank Guarantee are satisfied.
  • If the required proof is missing or incomplete, the Bank can refuse to pay.
  • Because this process can cause delays and disputes, government departments usually avoid conditional Bank Guarantee.

Top-Up Bank Guarantee

  • If the Department uses part of the Bank Guarantee (for example, to recover damages), the Contractor must refill it to the full amount.
  • This usually lasts until all contract obligations are finished, including the Defects Liability Period.
  • This type of Bank Guarantee is very risky to Contractors.

One-Time Bank Guarantee

  • The Bank Guarantee is used only once and top-up provision is not allowed.
  • But Department can invoke partial amount in one instance and the balance amount can be invoked partially again and again.
  • For Example: If the Bank Guarantee is for Rs. 10 Crores, the Department may invoke Rs. 2 Crore one time, then invoke Rs. 5 Crore the second time and invoke Rs. 3 Crore a third time. 
  • The exact amount depends on the damage to the Department, which is determined by the Department itself when invoking. Later, the Contractor can raise a Claim in Arbitration or Court if the invoking is wrong or even if the amount invoked is wrong.
  • Usually, the Government invokes the full amount one-time itself to avoid complications.

Electronic Bank Guarantee (e-BG)

  • An Electronic Bank Guarantee is a digital Bank Guarantee issued, signed and stored online by the Bank.
  • The Contractor requests the e-Bank Guarantee. The Bank sends the e-Bank Guarantee directly to the Government Department using secure digital platforms.
  • The Department can instantly verify the e-Bank Guarantee online.
  • The Department can invoke the e-Bank Guarantee online.
  • All actions (including closing the e-Bank Guarantee) are done electronically, with no paper involved.
  • e-Bank Guarantee is fast, secure and reduces risk of loss or fraud. Many Government Departments and Banks now accept e-Bank Guarantee.

Check the following link for more details about e-Bank Guarantee: https://nesl.co.in/e-bg/