How to Compute VAT Payable (with Examples)

Who Needs to Compute VAT Payable

Value-Added Tax (VAT) is a 12% tax on the sale of goods, services, and leases, as well as on importation, collected at every stage of the supply chain. In the Philippines, VAT registration is mandatory once a business's gross sales or receipts exceed ₱3,000,000 in any 12-month period, a threshold set under the TRAIN Law and still in effect. Businesses below that threshold generally pay the simpler 3% percentage tax (BIR Form 2551Q) instead, unless they voluntarily register for VAT.

If your business is VAT-registered, you don't remit 12% of your total sales to the BIR. You remit the difference between the VAT you charged your customers and the VAT your suppliers charged you. That difference is what's called VAT payable, and understanding how to compute it correctly protects you from both underpayment (which triggers surcharges) and overpayment (which ties up cash you didn't need to give up).

Note: Thresholds, rates, and filing rules are set by law and BIR regulations that can change. Always reconfirm current figures on the official BIR website (bir.gov.ph) before filing.

The Basic Formula: Output VAT Minus Input VAT

The computation itself is simple in concept, even if the supporting bookkeeping takes discipline:

VAT Payable = Output VAT − Input VAT (− any excess input VAT carried over from the prior quarter)

Output VAT is the 12% VAT you charge and collect from customers on your taxable sales of goods or services during the period. It is computed on the VAT-exclusive (net) selling price. If a price is already VAT-inclusive, you first divide by 1.12 to get the net amount, then multiply by 12% to get the VAT component.

Input VAT is the 12% VAT that your VAT-registered suppliers charged you on purchases, importations, and eligible business expenses. It is only creditable if it is properly substantiated — meaning it appears on a valid VAT invoice or VAT receipt issued by a VAT-registered supplier and is directly connected to your business operations.

If, for a given quarter, your input VAT exceeds your output VAT, you don't get an automatic cash refund. Instead, the excess is normally carried over and applied against output VAT in the following quarter, except for specific cases such as zero-rated export sales, which may qualify for a VAT refund or tax credit certificate under separate BIR rules.

Step-by-Step Worked Example

Suppose ABC Trading Corp. is a VAT-registered wholesaler filing its return for the second quarter of 2026 (April to June). Here is how the computation flows:

• Gross sales for the quarter, VAT-exclusive: ₱2,500,000
• Output VAT = ₱2,500,000 × 12% = ₱300,000
• Purchases of inventory and eligible expenses from VAT-registered suppliers, VAT-exclusive: ₱1,500,000
• Input VAT = ₱1,500,000 × 12% = ₱180,000
• Excess input VAT carried over from the first quarter of 2026: ₱20,000

Putting it together: ₱300,000 (output VAT) − ₱180,000 (current input VAT) − ₱20,000 (carried-over input VAT) = ₱100,000 VAT payable for the quarter.

Now consider a single VAT-inclusive transaction, which is how most retail receipts are presented. If a customer pays ₱56,000 for goods and that price already includes VAT, the net sale is ₱56,000 ÷ 1.12 = ₱50,000, and the output VAT embedded in that transaction is ₱6,000 (₱56,000 − ₱50,000). Multiply that same logic across every invoice for the quarter, and you arrive at your total output VAT.

What Counts as Valid Input VAT (and What Doesn't)

Not every peso you spend generates a creditable input VAT. To claim input VAT, the purchase generally must meet all of the following:

• It came from a VAT-registered supplier, evidenced by a proper VAT invoice showing the supplier's TIN, the word "VAT-registered," and the VAT amount separately stated.
• It is directly related to your VAT-taxable business activity, not a personal expense.
• It is supported by original documentation kept in your books of accounts, since the BIR can disallow unsubstantiated claims on audit.

Purchases from non-VAT suppliers (those paying the 3% percentage tax) do not carry input VAT you can credit, even if the supplier's price looks similar to a VAT-inclusive one. Likewise, input VAT on capital goods, such as equipment or vehicles used in the business, is now creditable in full in the period of purchase rather than spread out over 60 months, following the removal of the amortization requirement for purchases made from 2022 onward.

This is also where bookkeeping accuracy matters most, since output and input VAT have to be tracked transaction by transaction, not estimated at quarter-end. In Kontabler, every sales invoice and purchase bill you record is automatically tagged with the correct output or input VAT, so your running VAT payable balance is always current and the figures needed for your return are ready without manual recomputation.

Filing BIR Form 2550Q and Avoiding Penalties

Under the Ease of Paying Taxes (EOPT) Act, VAT-registered taxpayers now file BIR Form 2550Q on a purely quarterly basis; the old monthly VAT declaration (BIR Form 2550M) has been discontinued. The return, together with payment, is due within 25 days after the close of each taxable quarter, filed and paid electronically through eFPS or eBIRForms depending on your taxpayer classification.

Filing late or underpaying VAT exposes a business to a 25% surcharge on the basic tax due, 12% annual interest computed from the deadline until full payment, and a compromise penalty based on the BIR's penalty schedule. These add up quickly on a sizable VAT payable figure, so quarter-end reconciliation of output and input VAT well before the 25-day deadline is worth the discipline. Because rates, thresholds, and procedural rules are periodically updated through new Revenue Regulations, always cross-check the current figures against the BIR's official issuances before filing.