预付款保函（Advance Payment Guarantee）是指卖方在买方支付订金后，提供给买方的一种保证机制。它承诺，如果卖方无法按合同要求履行义务，买方可以向保函开立行银行索偿。
在国际贸易中，预付款保函也常被称作Advance Payment Guarantee或Advance Payment Letter of Guarantee。
预付款保函通常由买卖双方商定，并根据国际标准组织的相关条款进行编辑。
模板一：
``` [Issuer's Letterhead] To: [Beneficiary's name and address] Date: [date] Subject: Advance Payment Guarantee Dear Sir/Madam, We, [name of issuing bank], hereby issue this Advance Payment Guarantee in favor of [buyer's name] (hereinafter referred to as the "Buyer") for a total sum of [amount in currency], representing [percentage]% of the total contract value. This guarantee is valid until [expiry date], unless otherwise agreed upon by the parties. The payment under this guarantee will be made to the Buyer upon receipt of their written demand, stating that the Seller failed to fulfill their contractual obligations. The demand should be accompanied by supporting documents, proving the Seller's default. Sincerely, [Authorized signatures and stamp] ```1. 商定预付款金额和百分比。
2. 买方与卖方约定开立预付款保函。
3. 卖方向买方提供预付款保函。
1. 在国际贸易中，尤其是涉及到大额交易的情况下，买方常要求卖方提供预付款保函。
2. 预付款保函也适用于一些投资建设项目，以确保施工单位可以按时收到预付款。
1. 在使用预付款保函之前，买方应仔细评估卖方的信誉和履约能力。
2. 卖方应选择可靠的银行作为保函的发行方，以确保保函能得到认可并被执行。
