Furnish Specified Information - ISDA Provision

In gory detail

1992 ISDA 4(a) Furnish Specified Information. It will deliver to the other party or, in certain cases under subparagraph (iii) below, to such government or taxing authority as the other party reasonably directs:— (i) any forms, documents or certificates relating to taxation specified in the Schedule or any Confirmation; (ii) any other documents specified in the Schedule or any Confirmation; and (iii) upon reasonable demand by such other party, any form or document that may be required or reasonably requested in writing in order to allow such other party or its Credit Support Provider to make a payment under this Agreement or any applicable Credit Support Document without any deduction or withholding for or on account of any Tax or with such deduction or withholding at a reduced rate (so long as the completion, execution or submission of such form or document would not materially prejudice the legal or commercial position of the party in receipt of such demand), with any such form or document to be accurate and completed in a manner reasonably satisfactory to such other party and to be executed and to be delivered with any reasonably required certification, in each case by the date specified in the Schedule or such Confirmation or, if none is specified, as soon as reasonably practicable. (view template)

2002 ISDA 4(a) Furnish Specified Information. It will deliver to the other party or, in certain cases under clause (iii) below, to such government or taxing authority as the other party reasonably directs:― (i) any forms, documents or certificates relating to taxation specified in the Schedule or any Confirmation; (ii) any other documents specified in the Schedule or any Confirmation; and (iii) upon reasonable demand by such other party, any form or document that may be required or reasonably requested in writing in order to allow such other party or its Credit Support Provider to make a payment under this Agreement or any applicable Credit Support Document without any deduction or withholding for or on account of any Tax or with such deduction or withholding at a reduced rate (so long as the completion, execution or submission of such form or document would not materially prejudice the legal or commercial position of the party in receipt of such demand), with any such form or document to be accurate and completed in a manner reasonably satisfactory to such other party and to be executed and to be delivered with any reasonably required certification, in each case by the date specified in the Schedule or such Confirmation or, if none is specified, as soon as reasonably practicable. (view template)

Withholding under the ISDA

TL;DR: The basic rationale is this:

• if the tax relates to the underlying instrument, rather than the {{{{{1}}}|Payer}}’s residence or tax status, the {{{{{1}}}|Payer}} does not have to gross up.
• if the tax relates to the {{{{{1}}}|Payer}}’s residence or tax status, then the Payer does have to gross up unless the {{{{{1}}}|Payee}} should have provided information to the {{{{{1}}}|Payer}} which would have entitled the {{{{{1}}}|Payer}} to avoid the tax.
• if you’ve agreed the {{{{{1}}}|FATCA Amendment}}, the {{{{{1}}}|Payer}} doesn’t have to gross up any {{{{{1}}}|FATCA Withholding Tax}}es.

The combination of the {{{{{1}}}|Payer Tax Representations}} and the {{{{{1}}}|Gross-Up}} clause of the ISDA Master Agreement has the following effect:

• Section {{{{{1}}}|3(e)}}: I promise you that I do not have to withhold on my payments to you (as long as all your {{{{{1}}}|Payee Tax Representations}} are correct and you have, under Section {{{{{1}}}|4(a)}}, given me everything I need to pay free of withholding);
• Section {{{{{1}}}|2(d)}}: I will not withhold on any payments to you. Unless I am required to by law. Which I kind of told you I wasn’t... If I have to withhold, I'll pay the tax the authorities and give you the receipt. If I only had to withhold because of my connection to the taxing jurisdiction (that is, if the withholding is an {{{{{1}}}|Indemnifiable Tax}}), I’ll gross you up. (You should look at the drafting of {{{{{1}}}|Indemnifiable Tax}}, by the way. It's quite a marvel). ...
• {{{{{1}}}|Gross-Up}}: Unless the tax could have been avoided if the {{{{{1}}}|Payee}} had taken made all its {{{{{1}}}|3(f)}} representations, delivered all its {{{{{1}}}|4(a)}} material, or had its {{{{{1}}}|3(f)}} representations been, like, true).
• {{{{{1}}}|Stamp Tax}} is a whole other thing.
• As is FATCA, which (as long as you’ve made your {{{{{1}}}|FATCA Amendment}} or signed up to a {{{{{1}}}|FATCA Protocol}}, provides that {{{{{1}}}|FATCA Withholding Tax}}es are excluded from the Section {{{{{1}}}|3(e)}} {{{{{1}}}|Payer Tax Representations}}, and also from the definition of {{{{{1}}}|Indemnifiable Tax}}. Meaning one doesn't have to rep, or gross up, FATCA payments.