Input VAT and Output VAT Explained

Output VAT and Input VAT: The Two Sides of Every Sale

Value-added tax works as a chain. At every VAT-registered link in that chain, the seller charges VAT on what it sells (output VAT) and pays VAT on what it buys (input VAT). The business only remits the difference to the Bureau of Internal Revenue. Understanding this mechanic is the single most useful thing a Philippine business owner or bookkeeper can learn about VAT compliance, because most disputes at audit trace back to one of these two numbers being wrong.

Output VAT is the 12% tax you add to the selling price of goods or services when you are a VAT-registered person. If you sell a laptop for ₱50,000, you charge your customer ₱56,000 — ₱50,000 for the item plus ₱6,000 output VAT (12% of ₱50,000). That ₱6,000 belongs to the government from the moment you issue the invoice; you are simply holding it in trust until you file your return.

Input VAT is the VAT you pay to your own suppliers when you purchase goods, services, or capital equipment for your business. If you bought the inventory that became that laptop for ₱35,000 plus ₱4,200 VAT, that ₱4,200 is your input VAT. Because the tax is meant to apply only to the value you add, you get to offset (credit) that input VAT against the output VAT you collected, and remit only the net amount.

Who Is Covered and the ₱3,000,000 Threshold

Under the TRAIN Law (Republic Act No. 10963), any person or business whose actual or expected gross sales or receipts exceed ₱3,000,000 in a 12-month period is required to register as a VAT taxpayer. Below that threshold, a business may register instead as a non-VAT taxpayer subject to the 3% percentage tax (BIR Form 2551Q), or a VAT-exempt entity may voluntarily register for VAT if it wants to claim input VAT credits — for example, an exporter that wants to recover VAT on its local purchases.

This threshold should always be reconfirmed on the BIR website, since Congress has adjusted VAT-related thresholds before and could do so again through future tax legislation.

Which Purchases Give You Creditable Input VAT

Not every peso you spend carries creditable input VAT. For a purchase to generate input VAT you can legally offset, all of the following must be true:

• The supplier is itself VAT-registered and issued a proper VAT invoice or VAT-registered official receipt showing the 12% VAT separately from the price.
• The purchase is used, directly or indirectly, in your VAT-able trade or business — inventory, raw materials, supplies, rent, utilities, professional fees, freight, and capital assets like equipment or vehicles used in the business all qualify.
• The invoice or receipt shows your business name and Taxpayer Identification Number (TIN) as the buyer, along with the supplier's name, address, TIN, and BIR-registered invoice details.
• The transaction is properly recorded in your books within the taxable period being claimed.

Purchases from suppliers who are not VAT-registered (percentage taxpayers, for instance) do not carry input VAT at all, even if the receipt shows an amount labeled as tax — you simply cannot credit what was never legally passed on to you. Similarly, personal expenses, purchases unrelated to the business, and transactions supported only by informal receipts or unregistered invoices will be disallowed on audit, even if VAT was technically paid.

Import purchases are a special case: instead of a supplier's invoice, input VAT is substantiated by the import entry declaration and the official receipt from the Bureau of Customs showing VAT paid at importation.

Computing VAT Payable: A Worked Example

Consider a small trading business for the month, with all figures net of VAT (VAT-exclusive):

• Total sales: ₱800,000 → Output VAT = ₱800,000 × 12% = ₱96,000
• Total qualifying purchases (inventory, supplies, rent, utilities): ₱500,000 → Input VAT = ₱500,000 × 12% = ₱60,000

VAT payable for the period = Output VAT − Input VAT = ₱96,000 − ₱60,000 = ₱36,000, remitted to the BIR.

If input VAT for a period exceeds output VAT — common for businesses that just made a large equipment purchase — the excess is not lost. It is carried forward to the next quarter's return and applied against future output VAT, or, in specific cases such as zero-rated sales (export sales, sales to certain registered enterprises), it may instead be filed as a VAT refund or tax credit claim with the BIR.

Filing, Invoicing Changes Under EOPT, and Recordkeeping

The Ease of Paying Taxes Act (Republic Act No. 11976) simplified several long-standing VAT rules. Monthly VAT filing (the old BIR Form 2550M) was dropped, so VAT-registered taxpayers now file only the quarterly BIR Form 2550Q, due within 25 days after the end of each taxable quarter. The EOPT Act also removed the ₱500 annual registration fee (previously paid through BIR Form 0605) that businesses used to pay every January. On invoicing, EOPT harmonized the documentation for goods and services: the Sales Invoice (or VAT invoice) is now the primary document for recognizing both output VAT on sales and input VAT on purchases, replacing the old practice of using Official Receipts specifically for services. Existing unused Official Receipts could generally still be used as supplementary documents during the transition period the BIR prescribed, but businesses should confirm their current invoicing setup complies with the latest BIR revenue regulations implementing EOPT.

In Kontabler, every sales invoice and purchase bill you record automatically splits the VAT-exclusive amount from the 12% VAT, posts output VAT to your sales tax liability and input VAT to your input tax asset account, and rolls both totals into the figures you need for your 2550Q — so the offsetting calculation shown above happens in the background as you transact, rather than as a manual spreadsheet exercise at quarter-end.

Substantiation at Audit

When the BIR examines a taxpayer's VAT returns, the burden of proof for every input VAT claim sits with the taxpayer. Examiners routinely disallow input VAT where:

• The invoice is not BIR-registered, is expired, or does not show the required TIN and VAT breakdown for both buyer and seller.
• The supplier turns out to be non-VAT-registered or the invoice was issued under a different taxpayer's registration.
• The claimed purchase cannot be tied to a business purpose, or the amount claimed does not match what is reflected in the supplier's own Summary List of Sales.
• The input VAT was claimed in the wrong period, outside the timeframe allowed for claiming that credit.

As a practical rule: an input VAT claim is only as strong as the invoice behind it. Keep original BIR-registered invoices, not photocopies, and reconcile your purchase register against supplier invoices every quarter before filing.

Maintaining organized digital or physical copies of every VAT invoice, matched to the correct taxable period, is the difference between a smooth VAT audit and a costly assessment with 25% surcharge and 12% annual interest on any deficiency found. Because VAT rules, thresholds, and interest rates are adjusted periodically, always cross-check current figures against the BIR website or a licensed accountant before filing.