VAT looks simple on the surface — charge it, collect it, pay it over — but it is where many Trinidad & Tobago businesses quietly lose money. The errors are rarely dramatic; they are small, repeated mistakes that compound into unclaimed credits, penalties and interest, or the nasty surprise of a liability that should never have arisen. Here are seven of the most common VAT mistakes we see, and how to fix each one before it costs you.
1. Registering late — or missing the threshold entirely
Registration is currently compulsory once your commercial supplies reach TT$600,000 in any twelve-month period — and that is a rolling test, not a calendar-year one. Businesses growing quickly often watch the annual figure and miss the month they actually crossed the line. The consequence is severe: you are treated as if you should have been charging VAT, so the BIR can assess the output VAT you failed to collect, plus penalties and interest, even though you never billed your customers for it.
Fix: monitor your rolling twelve-month turnover monthly, not annually. As you approach the threshold, register on time and build VAT into your pricing before you cross it. If you have already passed it, regularise your position promptly — voluntary correction is always cheaper than a discovered one.
2. Confusing zero-rated supplies with exempt supplies
This is the most expensive technical mistake in T&T VAT. Zero-rated supplies are taxable at 0% — you charge no VAT to the customer, but because they are still taxable you can recover the input VAT on related purchases. Exempt supplies are outside VAT entirely — you charge no VAT, but you also cannot recover input VAT on the costs of making them. Treat an exempt supply as zero-rated and you over-claim; treat a zero-rated supply as exempt and you throw away recoverable VAT.
Fix: classify every revenue stream correctly against the current zero-rated and exempt lists. If you make both taxable and exempt supplies, you must apportion input VAT — get the method right from the start.
3. Missing input VAT credits you are entitled to
Many businesses pay more VAT than they need to simply because they fail to claim everything they are entitled to. Credits get lost when invoices are mislaid, when purchases are not recorded in the right period, or when staff do not realise a cost carries recoverable VAT.
Fix: capture every valid purchase invoice in your accounting system, in the correct bi-monthly period, and reconcile input VAT before you file. Remember the rule that underpins it all: no valid invoice in the business's name, no claim. Tidy bookkeeping and accounting is the difference between claiming everything and leaving money behind.
4. Poor record-keeping
VAT is a documentary tax. If you cannot produce the invoice, the credit is disallowed — however genuine the expense. Weak records also make your bi-monthly returns slow, error-prone and impossible to defend if the BIR asks questions.
Fix: keep numbered sales invoices, valid purchase invoices in the company's name, and VAT working papers for every return, all reconciled to your bank. Strong records are also your best defence in an audit — see our BIR audit checklist for what good looks like.
5. Slipping on bi-monthly filing deadlines
VAT returns in T&T are currently filed on a bi-monthly cycle, and the deadlines come round faster than annual taxes. A missed or late return attracts penalties and interest, and a pattern of late filing is exactly the kind of inconsistency that draws BIR attention.
Fix: diarise every filing and payment date for the year, and prepare returns from reconciled records rather than at the last minute. If filing reliably is a stretch internally, a CFO advisory arrangement or outsourced finance support keeps the cycle on track.
6. Getting VAT on imports wrong
VAT on imported goods is charged at the border, and the timing and documentation differ from domestic purchases. Businesses commonly miss the input credit on import VAT, claim it in the wrong period, or fail to keep the customs documentation needed to support it.
Fix: treat import VAT as a distinct workflow. Keep the customs entries and import documents, match them to the goods received, and claim the input credit in the correct period with the paperwork to back it.
7. Charging VAT while unregistered
At the other end of the scale, some businesses — often new ones eager to look established — add "VAT" to their invoices before they are registered. This is not allowed. You cannot charge VAT without a valid registration, and doing so exposes you to having to account for the amounts collected, plus penalties, while your customers cannot use the "VAT" as a credit.
Fix: only charge VAT once you hold a valid registration and your VAT number appears on your invoices. If you are below the threshold but expect to cross it, plan the registration and the repricing together so the transition is clean.
Turning VAT from a leak into a discipline
None of these mistakes is exotic. They are the everyday slips of busy businesses without a tight VAT routine — and every one of them is preventable with correct classification, complete records and a filing calendar you actually keep. Get those three things right and VAT stops being a source of penalties and becomes simply a flow of money you collect and pass on.
If you are unsure about any of these — especially the zero-rated versus exempt distinction or import VAT — a focused review pays for itself quickly. Speak to our VAT advisory team or start with a broader tax health check, and keep an eye on the budget each year for any change to the rate, threshold or the zero-rated and exempt lists. Always confirm the current rules against the VAT Act and the latest Finance Act before you rely on them.