Difference between standby letter of credit and demand guarantee?

Bank guarantee: A Bank guarantee is a type of guarantee under section 126 Indian if faced a situation where a client asks to supply a financial guarantee?

Standby letter of credit (SLOC or SBLC), also known as a standby or LOC, is a lender's guarantee of payment to an interested third-party in the event the client defaults on an agreement. Standby letters of credit are formal documents that specify the duties and obligations of each party and serve as an act of good faith. The bank issuing the SLOC performs general underwriting duties to ensure the financial credibility of the party seeking the letter of credit. Then it sends a notification to the bank of the party requesting the letter of credit (typically a seller or creditor), taking into consideration that in most cases, Standby letter of credit is issued and governed in accordance with the Uniform rules of letters of credit applied and issued by the International Chamber of Commerce. 

Whereas the "Demand guarantee" is An irrevocable written undertaking issued by a bank ( the guarantor , upon specific written instructions received and signed from the applicant (the guaranteed), to pay a specific

(beneficiary), any sum that may be demanded or claimed by that beneficiary for a very specific purpose (the guarantee purpose), within a specific validity, and up to a maximum amount that is previously determined in the guarantee ”, Taking into consideration that demand guarantees are governed in most cases either by local countries' law or by "URDG" issued by  International Chamber of Commerce. 

A bank guarantee & a letter of credit are similar in many ways but they're two different things.

Letters of credit ensure a transaction proceeds as planned, while bank guarantees reduce the loss if the transaction doesn't go as planned.

A letter of credit , sometimes referred to as a documentary credit, acts as a promissory note from a financial institution, usually a bank or credit union. It represents an obligation taken on by a bank to make a payment once certain criteria are met. Once these terms are completed and confirmed, the bank will transfer the funds. The letter of credit ensures the payment will be made as long as the services are performed.

For example, an American wholesaler receives an order from a Canadian company. The wholesaler has no way of knowing whether the buyer can fulfill his payment obligations, and requests a letter of credit be provided in their contract. The purchasing company applies for a letter of credit at a bank where it already has funds or a line of credit (LOC). After the goods have been shipped, the bank would pay the wholesaler its due as long as the terms of the sales contract are met, such as delivery before a certain time or confirmation from the buyer that the goods were received undamaged. The letter of credit substitutes the bank's credit for that of its client, ensuring correct and timely payment.

Letters of credit are especially important in international trade due to the distance involved and potentially differing laws in the countries of the businesses involved. In these transactions, it is not always possible for the parties to meet in person. The bank issuing the letter of credit holds payment on behalf of the buyer until it receives confirmation that the goods in the transaction have been shipped.

While letters of credit are used mostly in international trade agreements, bank guarantees are often used in real estate contracts and infrastructure projects.

Bank guarantees represent a more significant contractual obligation for banks than letters of credit do. A bank guarantee, like a letter of credit, guarantees a sum of money to a beneficiary; however, unlike a letter of credit, the sum is only paid if the opposing party does not fulfill the stipulated obligations under the contract. This can be used to essentially insure a buyer or seller from loss or damage due to nonperformance by the other party in a contract.

Bank guarantees insure both parties in a contractual agreement from credit risk. For instance, a construction company and its cement supplier may enter into a new contract to build a mall. Both parties may have to issue bank guarantees to prove their financial stance and capability. In a case where the supplier fails to deliver cement within a specified time, the construction company would notify the bank, which then pays the company the amount specified in the bank guarantee.

Both bank guarantees and letters of credit work to reduce financial risk. The seller takes on less risk when a letter of credit or bank guarantee is active, and would be more likely to agree to the transaction. These agreements are particularly important and useful in what would otherwise be risky transactions for the seller, such as certain real estate and international trade contracts. Banks, since they are agreeing to take on risk, thoroughly screen buyers interested in one of these transactions. After the bank has determined that the buyer is a reasonable risk, a monetary limit is placed on the agreement. The bank agrees to be obligated up to, but not exceeding, the limit. This protects the bank by providing a specific threshold of risk. Creditworthy buyers are then issued a letter of credit or bank guarantee.