Credit-Invoice Mechanism
Value-added tax operates through the credit-invoice method: a VAT-registered seller charges output tax on taxable sales, while the same seller credits input tax passed on by suppliers or paid on importations against that output tax. The tax is imposed on transactions but collected in stages, so the statutory taxpayer remits only the VAT on the value added by the enterprise.
Output tax is the VAT due on the sale, barter, exchange, lease, or deemed sale of taxable goods, properties, or services by a VAT-registered person. Input tax is the VAT due from or paid by a VAT-registered purchaser on importation, or the VAT passed on by a VAT-registered supplier on domestic purchases of goods, properties, or services used in trade or business.
The basic settlement formula is direct: output tax less creditable input tax equals VAT payable; if creditable input tax exceeds output tax, the excess is generally carried over, except when the law allows refund or tax credit, particularly for input tax attributable to zero-rated sales or for unused input tax upon cancellation of VAT registration.
| Item | Function in VAT | Usual Treatment |
|---|---|---|
| Output tax | VAT charged by the seller on taxable sales | Reported as VAT liability and reduced by allowable input tax |
| Input tax | VAT paid or passed on to the buyer on business purchases | Credited against output tax if attributable to taxable activity |
| Excess input tax | Input tax greater than output tax for the period | Carried over, or refunded when the law permits |
| Disallowed input tax | VAT on purchases not creditable under VAT rules | Treated as cost or expense if otherwise deductible under income tax rules |
Output Tax
Output tax arises only from taxable transactions. A person may be engaged in business and still have transactions that are VAT-exempt, zero-rated, or outside the VAT system; output tax attaches only when the transaction is subject to the 12% VAT or to the 0% VAT rate.
The seller, lessor, or service provider is the person legally liable for VAT, even if the economic burden is shifted to the buyer. The buyer's refusal or failure to pay the separately billed VAT does not erase the seller's statutory liability once a taxable transaction subject to output tax has occurred.
Transactions Generating Output Tax
Output tax is imposed on taxable sales of goods or properties, taxable sales or exchanges of services, and taxable use or lease of properties in the course of trade or business. It also arises from certain deemed-sale transactions where the law treats a withdrawal, distribution, transfer, or cessation event as a taxable sale to prevent previously credited input tax from escaping the VAT chain.
For goods and properties, the ordinary output tax is based on the gross sales or gross selling price, excluding the VAT itself. For services and lease of properties, the Ease of Paying Taxes amendments harmonized the basis toward gross sales rather than the former gross receipts approach, making the invoice-based system more central to both output tax and input tax recognition.
For importation, VAT is generally paid to the Bureau of Customs before release of the goods. The VAT paid on importation is not output tax of the importer; it is import VAT which may become creditable input tax if the importer is VAT-registered and the imported goods are used in VAT-taxable business.
Tax Base and VAT-Inclusive Amounts
If VAT is billed separately, the output tax is computed by applying the VAT rate to the VAT-exclusive selling price or gross sales. If the invoice or contract states only a VAT-inclusive amount, the output tax is extracted by multiplying the total amount by 12/112, because the total is deemed to contain both the selling price and the VAT.
Excise tax, when applicable to the goods sold, forms part of the VAT base because it is part of the amount charged before VAT. Sales returns, allowances, and legitimate discounts affect output tax only when they are actually granted and properly reflected in the invoice, credit memo, or accounting records required by VAT rules.
In sales of real property by a VAT-taxable real estate dealer, output tax generally attaches only when the property is an ordinary asset held primarily for sale or lease in the ordinary course of business. Capital assets of persons not engaged in real estate business are not converted into VAT-taxable transactions merely because the seller is otherwise engaged in business.
Zero-Rated Sales
A zero-rated sale is a taxable sale subject to a 0% rate. It produces no output tax to be paid on the sale, but it preserves the seller's right to credit or seek refund of input tax attributable to that sale, provided the statutory and substantiation requirements are met.
The zero rate is different from exemption because zero-rating keeps the transaction inside the VAT system. A VAT-registered taxpayer making zero-rated sales may still be entitled to recover input tax; a taxpayer making exempt sales generally cannot claim input tax attributable to those exempt sales.
VAT-Exempt Sales
An exempt sale produces no output tax because the transaction is removed from VAT. The corresponding cost is that input tax attributable to exempt sales is not creditable; the VAT passed on by suppliers becomes part of cost or expense, subject to ordinary deductibility rules.
A VAT-registered person may have both taxable and exempt transactions. Registration alone does not make an exempt transaction VATable, and the taxpayer must segregate or allocate input tax according to the actual use of the purchases.
Deemed Sales
Deemed-sale rules impose output tax even without an ordinary sale for cash. They commonly cover transfer, use, or consumption of business goods not in the course of business, distribution of inventory or property to shareholders or creditors, consignment of goods not sold within the prescribed period, and retirement or cessation of business with remaining taxable inventory.
The purpose of deemed-sale output tax is to neutralize a prior input tax credit. When goods or properties entered the VAT chain with creditable input tax and later leave the chain without a taxable sale, the law treats the exit as a taxable event so that the tax benefit corresponds to taxable use.
Input Tax
Input tax is a statutory credit, not an ordinary deduction and not a vested property right detached from VAT compliance. It exists only to the extent allowed by the NIRC and implementing rules, and the taxpayer claiming it must show both the taxable nature of the purchase and the legal basis for crediting it against output tax.
The most common input tax is the VAT separately passed on by a VAT-registered seller to a VAT-registered buyer. Import VAT paid by a VAT-registered importer is also input tax if the imported goods are used in VAT-taxable trade or business.
Purchases That May Generate Creditable Input Tax
Creditable input tax may arise from domestic purchases or importations of goods for sale, for conversion into finished goods, for use as supplies, for use as materials, or for use as ordinary business assets. It may also arise from purchase of services, lease of property, and acquisition of depreciable capital goods used in VAT-taxable operations.
The purchase must be connected with trade or business. VAT on personal expenses of the owner, expenses unrelated to the enterprise, or purchases used solely in exempt activity is not creditable input tax, even if the invoice separately states VAT.
- Input tax on purchases used exclusively for 12% VAT sales is fully creditable, subject to substantiation.
- Input tax on purchases used exclusively for zero-rated sales is creditable and may be recoverable by refund or tax credit if unutilized.
- Input tax on purchases used exclusively for VAT-exempt sales is not creditable.
- Input tax on common purchases used for taxable and exempt transactions must be allocated.
- VAT paid by a non-VAT taxpayer is not creditable input tax and normally becomes part of cost or expense.
Substantiation
The VAT invoice is the central document for both output tax reporting and input tax crediting under the invoice-based system. A buyer claiming input tax must generally possess a valid VAT invoice showing the seller's VAT status, the parties' identifying information required by regulations, the nature of the transaction, the taxable base, and the VAT amount separately indicated.
A document issued by a non-VAT seller cannot create input tax because no VAT was legally passed on. Likewise, a billing statement, collection receipt, acknowledgment receipt, or other supplementary document cannot substitute for a VAT invoice when the law requires an invoice to support the credit.
Substantiation rules are applied strictly because input tax reduces the tax otherwise payable to the government. However, modern invoicing rules distinguish between defects that go to the existence and amount of the VAT transaction and defects that are merely administrative; the essential point remains that the taxpayer must prove a real VAT-taxable purchase and the amount of VAT legally passed on.
Timing of Input Tax Recognition
Under the harmonized invoice-based VAT system, input tax is generally tied to the period in which the purchase transaction is documented by a valid VAT invoice and recorded for business purposes. The former distinction that placed services largely on a receipts-based footing has been narrowed by the shift of VAT on services toward gross sales and invoice documentation.
Input tax on depreciable capital goods is generally creditable when incurred and properly invoiced, subject to ordinary attribution rules. The current system no longer depends on the former extended amortization approach for large capital goods, although records must still show business use and VAT-taxable attribution.
If input tax is claimed in the wrong period but the transaction is otherwise valid, the issue is normally one of timing and substantiation, not an automatic conversion of the purchase into a non-creditable item. The taxpayer must still avoid double-claiming the same input tax in later periods.
Attribution and Allocation
Input tax is creditable only to the extent attributable to taxable transactions. Because a VAT-registered taxpayer may engage in 12% VAT sales, zero-rated sales, exempt sales, and non-business activities at the same time, attribution is a substantive part of the VAT computation.
Direct attribution controls when the use of the purchase can be identified. Input tax on packaging used solely for exported zero-rated goods belongs to zero-rated sales; input tax on supplies used solely in an exempt educational activity belongs to exempt sales and is not creditable.
When input tax cannot be directly attributed, it is allocated using a reasonable statutory or regulatory formula, commonly by comparing taxable sales to total sales. For this purpose, zero-rated sales are taxable sales because they remain within the VAT system, while exempt sales are included in total sales but excluded from the taxable-sales numerator.
| Use of Purchase | Input Tax Treatment |
|---|---|
| Used solely for 12% VAT sales | Creditable against output tax |
| Used solely for zero-rated sales | Creditable; may support refund or tax credit if unutilized |
| Used solely for exempt sales | Not creditable; treated as cost or expense |
| Used for both taxable and exempt sales | Allocated; only the taxable portion is creditable |
| Used for personal or non-business purposes | Not creditable |
Allocation prevents a taxpayer from using input tax attributable to exempt activity to reduce output tax from taxable activity. It also preserves the refundability of input tax properly attributable to zero-rated sales, even when the same taxpayer has domestic taxable sales.
Special Input Tax Credits
Transitional Input Tax
A person who becomes liable to VAT for the first time, or who elects VAT registration when allowed, may be entitled to transitional input tax on beginning inventory of goods, materials, and supplies. The credit recognizes that inventory acquired before VAT liability may later be sold in VAT-taxable transactions.
The transitional input tax is computed under the statutory formula, commonly the higher of the prescribed percentage of the value of beginning inventory or the actual VAT paid on that inventory, if properly supported. It is creditable against output tax because the taxpayer is entering the VAT system with inventory that will bear output tax upon sale.
The credit is not a general startup subsidy. It is tied to beginning inventory used in VAT-taxable business, and it cannot be claimed for assets or purchases outside the statutory coverage.
Presumptive Input Tax
Presumptive input tax is allowed for specified processors and manufacturers using primary agricultural products as inputs, such as certain processors of sardines, mackerel, and milk, and manufacturers of refined sugar, cooking oil, or packed noodle-based instant meals. It is designed to account for the VAT burden embedded in agricultural inputs that may be sourced from VAT-exempt suppliers.
The credit is computed using the statutory percentage of the gross value in money of purchases of qualifying primary agricultural products. Because it is a special statutory credit, it applies only to the covered industries, inputs, and production activities.
Input Tax on Importations
VAT paid on importation becomes creditable input tax when the importer is VAT-registered and the imported goods are used in VAT-taxable trade or business. If the imported goods are used for exempt activity, personal use, or non-business purposes, the import VAT is not creditable under the VAT system.
The import entry, customs payment documents, and related records perform the substantiation function for import input tax. The credit is limited to VAT actually paid and properly attributable to taxable business use.
Adjustments to Output and Input Tax
VAT accounting must reflect later events that reduce, cancel, or change the taxable transaction. Sales returns, purchase returns, allowances, rebates, cancellations, and price adjustments may require corresponding changes to output tax of the seller and input tax of the buyer.
If a seller issues a credit memo for a returned VATable sale, the seller may reduce output tax in the proper period, and the buyer must correspondingly reduce any input tax previously claimed. If a buyer returns goods after claiming input tax, the buyer cannot keep the credit for a purchase that no longer supports taxable business use.
When a taxpayer has paid output VAT on receivables that later remain uncollected beyond the agreed period, current VAT rules allow a credit or adjustment under prescribed conditions. If the receivable is later collected, the previously credited output VAT must be restored because the tax base has effectively been recovered.
Changes in use also matter. Goods or services originally purchased for taxable activity but later applied to exempt, personal, or non-business use may require input tax reversal or output tax recognition under deemed-sale or adjustment principles.
Government Withholding and VAT Settlement
Sales to the government or its instrumentalities may be subject to VAT withholding. Withholding affects the manner of remittance and crediting, but it does not change the character of the underlying sale if the transaction is VATable.
Under the creditable withholding approach, the seller still recognizes the proper output tax on the VATable sale, claims allowable input tax, and credits the VAT withheld by the government against VAT payable. The withheld amount is not itself an input tax; it is a payment or credit against the seller's VAT liability.
For sales to private buyers, there is generally no VAT withholding unless a specific rule applies. The seller reports output tax, reduces it by creditable input tax, and pays the net VAT due through the prescribed VAT return.
Excess Input Tax, Carry-Over, and Refund
If creditable input tax for the period exceeds output tax, the excess is generally carried over to the succeeding period as part of the taxpayer's available input tax. Carry-over is the normal treatment for excess input tax from ordinary 12% VAT operations because future output tax can absorb it.
Refund or tax credit is exceptional. It is principally available for unutilized input tax attributable to zero-rated or effectively zero-rated sales, and for unused input tax when VAT registration is cancelled due to retirement, cessation, or other qualifying cancellation events.
A refund claim for input tax attributable to zero-rated sales requires proof that the claimant was VAT-registered, made zero-rated or effectively zero-rated sales, incurred or paid input tax on purchases attributable to those sales, did not apply the same input tax against output tax, and filed the administrative and judicial claims within the periods required by law.
The administrative claim for refund or tax credit is filed with the tax authority within the statutory two-year period, generally counted from the close of the taxable quarter when the zero-rated sale was made. The tax authority acts within the period prescribed by law; denial or inaction within that period gives rise to the taxpayer's remedy before the Court of Tax Appeals within the corresponding appeal period.
For cancellation of VAT registration, the refund or tax credit concerns unused input tax that can no longer be applied against future output tax because the taxpayer is leaving the VAT system. The claim is limited to input tax legally accumulated and still unutilized at the time of cancellation.
Relationship Between Output Tax and Input Tax
Output tax and input tax must be analyzed together because one measures VAT liability and the other measures the statutory credit against that liability. A sale may be taxable even if the seller has no input tax to claim, and a purchase may carry VAT even if the buyer cannot credit it because the buyer is non-VAT, exempt, or unable to substantiate the credit.
The VAT system does not guarantee that every VAT paid by a business will be recovered. Recovery depends on VAT registration, taxable use, proper invoice support, correct attribution, timely reporting, and absence of prior utilization.
Zero-rating gives the clearest illustration of the relationship: there is no output tax on the sale because the rate is 0%, but input tax attributable to the sale remains recoverable because the transaction is taxable. Exemption is the opposite: there is no output tax because the transaction is outside VAT, but input tax attributable to it is denied because the transaction does not contribute to the VAT chain.
In mixed operations, the taxpayer must preserve the chain by matching output tax to taxable sales and input tax to taxable purchases. The result is a net VAT liability that taxes consumption without pyramiding tax on tax, while denying credits for transactions that the law deliberately removes from the VAT system.