The 'Regular Supplier' Rule for BIR Form 2307: When Does Withholding Actually Start?

A Top Withholding Agent (TWA) does not withhold on every purchase from every local supplier — the 1%/2% rule under BIR Form 2307 attaches only to a “regular supplier.” Under Revenue Regulations (RR) No. 11-2018, that means a supplier the TWA has transacted with at least six (6) times in the current or prior taxable year, regardless of amount, or any single casual purchase of ₱10,000 or more. Below both thresholds, no certificate is issued.

This guide is part of the BIR Form 2307 series. It assumes your company is already classified as a Top Withholding Agent — for the ₱12 million classification threshold itself, see Who Is a BIR Top Withholding Agent?. This post focuses on a narrower question TWAs run into constantly: once you’re a TWA, which of your many suppliers actually gets withheld from, and starting when?

What counts as a “regular supplier” under RR No. 11-2018? #

A “regular supplier” is a supplier a Top Withholding Agent has transacted with at least six (6) times — regardless of the peso amount of each transaction — in either the current or the immediately preceding taxable year. Casual, one-off suppliers generally fall outside the rule entirely, with one carve-out: a single purchase of ₱10,000 or more is withheld from even a first-time supplier.

The regulation’s own language, as commonly cited from Section 2.57.2 of RR No. 2-98 as amended by RR No. 11-2018, reads:

“Regular suppliers” refer to suppliers who are engaged in business or exercise of profession/calling with whom the taxpayer-buyer has transacted at least six (6) transactions, regardless of amount per transaction, either in the previous year or current year. As a general rule, this term does not include a casual purchase of goods/services that is purchase made from a non-regular supplier and oftentimes involving a single purchase. However, a single purchase which involves Ten thousand pesos (₱10,000.00) or more shall be subject to withholding tax under this subsection.

The “previous year or current year” phrase matters more than it looks. It means the six-transaction count doesn’t necessarily start over on January 1 — a supplier that already reached six transactions with you last year carries “regular supplier” status into the new year from its very first purchase this year, rather than making you count to six all over again.

The two separate triggers: transaction count and single-purchase amount #

Two independent tests can each, on their own, put a supplier under withholding — a TWA does not need both to apply at once. The first is the six-transaction count described above, which ignores amount entirely: six ₱2,000 purchases trigger “regular supplier” status just as surely as six ₱50,000 purchases. The second is the flat ₱10,000 single-purchase rule, which ignores transaction history entirely: even a supplier’s very first invoice is withheld from if that one invoice alone reaches ₱10,000.

Practically, this means a TWA’s accounts payable team has to check a new vendor against both tests before deciding whether a given payment carries EWT, not just one. A ₱9,000 first purchase from a brand-new vendor is not withheld. A ₱15,000 first purchase from that same brand-new vendor is withheld immediately, on the strength of the amount alone — no transaction history needed.

Worked example: when does withholding kick in on a new supplier? #

A newly onboarded supplier with no prior-year history is not “regular” until its sixth transaction in the current year — earlier small purchases stay untouched by withholding unless one of them independently clears ₱10,000. The table below tracks a single supplier through a year of purchases to show exactly where each trigger fires.

Meridian Business Solutions Inc., a classified Top Withholding Agent, starts buying office supplies from Bright Stationery Supply, a sole proprietor with no purchase history with Meridian in the prior year:

Notice what does not happen: purchases 1, 2, 4, and 5 stay untouched by withholding even after Bright Stationery Supply becomes a “regular supplier” in June. Meridian withholds on purchase 3 because that single invoice independently cleared ₱10,000, withholds on purchase 6 because it’s the transaction that establishes regular-supplier status, and continues withholding on purchase 7 and every purchase after because the supplier is now classified as regular. It does not go back and re-withhold on the four smaller purchases that came before the six-transaction line was crossed.

Because Bright Stationery Supply ends the year with seven transactions (well past six), it starts the following year already classified as “regular” from its very first purchase — Meridian does not reset the count to zero on January 1.

Is withholding retroactive once a supplier becomes “regular”? #

The general, practitioner-level understanding is that withholding applies prospectively — from the transaction that triggers “regular supplier” status onward — not retroactively to earlier casual purchases that fell under both thresholds at the time they were made. RR No. 11-2018 does not describe a process for reopening completed casual purchases, issuing a corrected BIR Form 2307, or clawing back withholding once a supplier’s transaction count crosses six mid-year.

That said, this is an operational reading rather than a line the regulation spells out explicitly, so treat it as the general position rather than an absolute guarantee — and confirm your own vendor’s history carefully rather than assuming every small early purchase is automatically exempt forever. Many companies choose the more conservative route of tracking each new vendor’s running transaction count from day one in their accounts payable system, precisely so the sixth transaction doesn’t get missed and the correct BIR Form 2307 goes out on time.

How the regular-supplier test affects when you issue BIR Form 2307 #

A withholding agent only issues BIR Form 2307 for the transactions actually subject to EWT — so a supplier’s regular/casual status directly determines whether a certificate is generated for a given payment at all. Once a purchase is withheld under either trigger, the same 1% goods / 2% services split from the general TWA rule applies: ATC WC158/WI158 for goods, WC160/WI160 for services, as covered in BIR Form 2307 for Purchases of Goods and BIR Form 2307 for Purchases of Services.

Certificates for a given supplier still follow the standard consolidated issuance timing — generally due within 20 days after the close of the quarter, or within 3 business days of a payee’s request — covered in Is BIR Form 2307 Issued Per Transaction, Monthly, or Quarterly?. The regular-supplier test decides whether a transaction belongs on that certificate in the first place; issuance timing is a separate question once it does.

Frequently asked questions #

What makes a supplier a “regular supplier” for BIR withholding tax purposes? #

Under RR No. 11-2018, a supplier becomes a Top Withholding Agent’s “regular supplier” once the TWA has transacted with it at least six (6) times, regardless of the peso amount per transaction, in either the current taxable year or the immediately preceding one. Meeting the six-transaction count is what triggers the obligation, not the total amount spent.

Does a Top Withholding Agent withhold on every purchase from a brand-new supplier? #

Not automatically. A new, casual supplier is generally outside the withholding rule until it becomes “regular” by hitting six transactions, with one exception: any single purchase of ₱10,000 or more is subject to withholding even from a first-time, casual supplier.

Is withholding retroactive once a supplier crosses the six-transaction threshold? #

The general understanding among practitioners is no — withholding applies prospectively from the transaction that establishes “regular supplier” status and onward, not retroactively to the earlier purchases that were below the ₱10,000 casual-purchase trigger. RR No. 11-2018 does not set out a mechanism for reopening and re-withholding on already-completed casual purchases.

Does the ₱10,000 single-purchase rule apply even to a casual, non-regular supplier? #

Yes. The ₱10,000 threshold is a separate, independent trigger from the six-transaction “regular supplier” test. A Top Withholding Agent withholds on any single purchase of ₱10,000 or more regardless of whether the supplier has reached six transactions.

Does the six-transaction count reset every calendar year? #

Not entirely. RR No. 11-2018 measures the six transactions in “either the previous year or current year,” so a supplier that already hit six transactions last year carries “regular supplier” status into the new year from its very first purchase, rather than starting the count over from zero.

Summary #

The 1%/2% Top Withholding Agent rule doesn’t apply to every supplier a TWA pays — it applies to a “regular supplier” under RR No. 11-2018: one with at least six transactions in the current or prior taxable year, regardless of amount, or any supplier whose single purchase alone reaches ₱10,000. The two tests are independent, and the general operational position is that withholding applies prospectively from the triggering transaction rather than reopening earlier casual purchases. Track each new vendor’s running transaction count and per-invoice amount from the first purchase, so the sixth transaction — or the first ₱10,000 invoice — doesn’t slip past without a BIR Form 2307. Start with Who Is a BIR Top Withholding Agent? to confirm TWA status, then see BIR Form 2307 for Purchases of Goods and BIR Form 2307 for Purchases of Services for the rates once a supplier qualifies.