外包工程保函，也称为履约保函或施工保函，是指承建商或供应商在与业主签订合同后向银行申请开立一份保函，作为对业主提供的担保。
外包工程保函对于承建商和供应商来说具有重要意义。它不仅能够增加业主对承建商或供应商的信任度，还能够降低项目风险、维护企业声誉，并为承建商或供应商提供资金支持。
外包工程保函通常由以下几个部分组成：
写作外包工程保函时，需要注意以下几个要点：
以下是一份外包工程保函的范文示例：
To: [业主名称]
Address: [业主地址]
Dear Sir/Madam,
Performance Bond
In consideration of the Contract between [供应商/承包商名称] and [业主名称], dated [合同签订日期], for the [工程项目名称] (the "Contract"), and of the sum of [保函金额及币种] ($[保函金额]) paid by [供应商/承包商名称] to [银行名称], as security for the performance of its obligations under the Contract, we, [银行名称], hereby undertake to pay you, upon your first written demand, any amount up to the limit [$保函金额] as may be demanded and up to that extent we guarantee the due and faithful fulfillment by the said [供应商/承包商名称] of its obligations under the Contract.
This Guarantee shall remain in force until the expiry date of [保函期限].
We undertake to honor your demand without reference to [供应商/承包商名称] and without any requirement on your part to prove any default by it or that repayment of any portion of such amount it has received from or on behalf of [供应商/承包商名称] is yet due and payable, provided however that if so demanded we will forthwith pay any sum specified in the demand notwithstanding any dispute or difference between you and [供应商/承包商名称] pending final determination thereof.
This Guarantee is subject to the Uniform Rules for Demand Guarantees as published by International Chamber of Commerce Publication No. 458.
Yours faithfully,
[银行名称]
[签名与公章]
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