For standard-rated supplies at 12.5% VAT, multiply the VAT-exclusive price by 1.125 to obtain an inclusive price. To reverse a final inclusive price, divide by 1.125; do not simply subtract 12.5% of the final amount.
Price before VAT and after VAT
The standard rate published by the Inland Revenue Division is 12.5% for standard-rated taxable supplies. If a VAT-registered supplier sells an item for TT$800 before VAT, 12.5% of TT$800 is TT$100. The VAT-inclusive amount is TT$900. The calculation works because TT$800 multiplied by 1.125 equals TT$900.
A business quote must clearly state whether the advertised price already includes VAT or whether VAT is added where lawfully applicable. Not all supplies are treated at the standard rate; exemption and zero-rated status depend on the particular transaction. Check the supply's classification rather than using 12.5% universally.
Reverse a final price correctly
When a receipt says TT$900 VAT inclusive, the pre-tax portion is TT$900 divided by 1.125, which equals TT$800. VAT is the TT$100 difference. It would be wrong to multiply TT$900 by 12.5% and call TT$112.50 the embedded VAT.
The tax portion represents 12.5% of the VAT-exclusive value, not 12.5% of the total that already includes tax. An equivalent shortcut for the embedded standard-rated VAT is the inclusive total divided by nine. Thus TT$900 divided by nine gives TT$100, subject to appropriate rounding.
Account for rounding
Software and point-of-sale systems can produce fractions of a cent on individual items. Define and test a consistent rounding method that follows the applicable tax and accounting requirements, particularly when many low-cost items appear on one invoice.
A mistake repeated across thousands of transactions can cause differences between sales summaries, tax invoices and VAT return figures. Compare transaction totals with the VAT ledger before deciding which calculation is correct. A qualified accountant can help establish the appropriate system configuration.
Invoice details matter beyond arithmetic
The IRD lists required tax-invoice details, including supplier name and VAT registration number, recipient, identifying serial number, date, goods or services, VAT-exclusive value, tax amount and total. These details help a business customer understand how the final amount was calculated.
An unregistered business should not invent a VAT number or describe an ordinary charge as VAT. VAT registration status is separate from company or business-name registration. Do not take the bank's receipt of a payment as evidence of the seller's tax status.
Separate tax from operating cash
A VAT-registered supplier collecting TT$900 on a standard-rated TT$800 sale should not treat the entire receipt as the sale's VAT-exclusive revenue. The TT$100 tax component must be tracked under the appropriate VAT accounting rules, alongside any legitimate input tax credits.
When goods are sold on credit, cash may arrive later than the accounting time of supply. The IRD's time-of-supply guidance should be reviewed for the facts. Building a cash buffer for tax obligations reduces the risk of spending collections that must eventually be remitted.
Worked price-list example
A bakery that is properly VAT registered sells a qualifying standard-rated catering package for TT$1,125 inclusive. Dividing by 1.125 gives TT$1,000 before VAT, leaving TT$125 VAT. The customer sees a single final price and, where required, a compliant tax invoice.
For two packages priced TT$562.50 inclusive each, the business should confirm that its rounding and invoice totals produce the expected TT$1,125 combined. Sales staff should use approved prices rather than manually adding 12.5% to an amount already marked inclusive.
Action checklist
- Confirm the supplier is VAT registered and the supply's actual tax treatment.
- Multiply a standard-rated exclusive amount by 1.125 to add VAT.
- Divide a standard-rated inclusive amount by 1.125 to reverse it.
- Configure rounding consistently in the invoice or POS system.
- Show correct invoice fields and separate VAT in bookkeeping.
- Reconcile VAT and receipts before filing returns.
Questions people ask
How much VAT is included in TT$1,125?
For a fully standard-rated VAT-inclusive TT$1,125 supply, TT$125 is the VAT portion and TT$1,000 is the exclusive value.
Is VAT 12.5% of the inclusive total?
No. The rate applies to the exclusive taxable value; dividing an inclusive price by 1.125 identifies that base.
Should a non-registered trader charge VAT?
A business-name registration is not a VAT registration; check the taxpayer's actual legal VAT status first.
Official references
Check the responsible authority for instructions that apply when you file. These sources informed this guide:
Related BizReg guides
What BizReg can help with
BizReg can help organise tax-registration documents, while an accountant should confirm product classifications and invoice calculations.
View BizReg services Ask BizRegGeneral information for Trinidad and Tobago, researched 21 October 2026. This article does not replace individual legal, tax or accounting advice. The relevant authorities decide applications and requirements.