Gate AI Package Quotes Behind HMRC TOMS VAT Classification Controls

Direct answer: under Tour Operators’ Margin Scheme (VAT Notice 709/5), a UK business that **buys in and resells** travel, accommodation and certain other services as a **principal or undisclosed agent** (acting in its own name) must normally account for VAT using **TOMS** — VAT on the **margin**, not a naïve full-selling-price VAT line that a generative quote engine invents. TOMS does **not** apply where you arrange supplies as a **disclosed agent** with a **readily identifiable commission** (see Notice 709/5 §§2.4 and 2.14, and Travel agents (VAT Notice 709/6)). Margin liability is **standard-rated** when the tour is enjoyed in the UK and **zero-rated** when enjoyed outside the UK (Notice 709/5 §4.8). **VAT invoices cannot be issued** for TOMS supplies because output tax is not usually known until the year-end calculation (Notice 709/5 §4.19) — the invoice must instead carry an accepted TOMS indication such as “this is a Tour Operators’ Margin Scheme supply”. From **2 January 2026**, suppliers of taxi and private-hire journeys are generally **excluded** from the tour-operator definition for TOMS except where the journey is supplied **in conjunction with, and ancillary to**, accommodation or certain other passenger transport (Revenue and Customs Brief 8 (2025)). An AI quoting, packaging, or invoicing agent that treats every basket as “VAT-inclusive at 20% of total”, issues a VAT invoice on a TOMS sale, or mislabels a disclosed-agent commission as a TOMS package is not “pricing personalisation”. It is a **VAT classification and invoicing control failure**.

That is the operator question Kaize is answering here. We are a UK AI product studio for travel and hospitality. This is **not tax advice**, not a substitute for Notice 709/5 / 709/6, your VAT registration position, your year-end TOMS calculation, or counsel. It is a **control-stack** article: what must already be true in the commercial and tax state machine before AI is allowed to quote a UK tour package price, attach transfers, or emit booking/invoice artefacts. It sits beside — and does not replace — our ATOL Certificate controls before first payment, our PTR insolvency-cover naming gates, our CCR 2013 pre-contract information gates, our DMCC drip-pricing total-price controls, and our FCA IPID gates before AI sells travel insurance. This article is narrower: **HMRC TOMS (and disclosed-agent) classification readiness must be encoded before AI may quote or invoice bought-in UK travel packages**.

Why generative quoting keeps colliding with Notice 709/5

Most UK tour operators already know TOMS exists. The 2026 failure mode is a **generative packaging assistant** that can assemble hotel + flight + transfer, invent a VAT line from the basket total, promise a “VAT invoice for your accounts team”, and confirm the sale **without** proving whether the firm is acting as principal/undisclosed agent versus disclosed agent, whether the components are Margin Scheme supplies (bought in and resupplied without material alteration for the traveller’s direct benefit), whether enjoyment is UK or non-UK for margin liability, whether a TOMS invoice legend (not a VAT invoice) is required, and — after 2 January 2026 — whether a standalone taxi/PHV journey is even eligible for TOMS. Notice 709/5 is explicit that TOMS treats a bundle as a **single supply** of arranging the travel, and that input VAT on bought-in Margin Scheme supplies is generally **not reclaimable** through the scheme.

Five HMRC facts teams must encode before any auto-quote or “smart package total” tool is armed on UK bought-in travel:

• **Who must use TOMS** — principal or undisclosed agent buying in and reselling designated travel services (Notice 709/5 §§2.1–2.3, 2.7).
• **Who must not force TOMS** — disclosed agent / intermediary with readily identifiable commission accounts under normal rules (Notice 709/5 §§2.4, 2.14; Notice 709/6).
• **Margin, not full price** — UK tour operator accounts for VAT on the difference between amounts received and amounts paid to suppliers for Margin Scheme supplies (Notice 709/5 §2.6); margin standard-rated if enjoyed in UK, zero-rated if enjoyed outside UK (§4.8).
• **No VAT invoice on TOMS sales** — use an accepted TOMS indication instead (Notice 709/5 §4.19); output tax is settled via provisional percentages and the year-end calculation (§§5, 8–12).
• **2 Jan 2026 taxi/PHV boundary** — taxi/PHV suppliers generally out of TOMS unless the journey is ancillary to accommodation or other passenger transport in the same package (RCB 8/2025); traditional tour-operator packages with transfers remain in scope of the exception.

Map the classification before the model prices

TOMS is not a prompt tip to “add VAT politely”. Your quoting agent needs structured fields for: commercial capacity on **this** basket (principal / undisclosed agent / disclosed agent); named principal where disclosed; whether each component is bought-in Margin Scheme, in-house, or agency with identifiable commission; package vs standalone; enjoyment geography (UK / outside UK / mixed with apportionment rules in §§4.9–4.12); tax-point method your firm uses (§§4.13–4.14 — departure/occupation vs payment thresholds); invoice artefact type (TOMS legend vs VAT invoice vs agency commission invoice); and, for transfers, whether a taxi/PHV leg is standalone or ancillary to accommodation/other transport after 2 January 2026. Those fields must be **sourced from commercial contracts, product configuration, and tax master data**, not invented in chat. A model that “estimates VAT at 20% of holiday total” on a TOMS package is inventing a tax treatment HMRC does not recognise as the TOMS output.

The six gates before AI may quote or invoice a UK tour package

Gate 1 — Lock commercial capacity: principal, undisclosed agent, or disclosed agent

Before any generative turn emits a package price or tax line, classify how the firm is acting on **this** sale. Gate 1 fails if the assistant assumes every hotel+flight basket is TOMS, or if disclosed-agent bookings (named principal, identifiable commission per Notice 709/6) are forced through a TOMS margin calculator.

Gate 2 — Classify components: Margin Scheme, in-house, or identifiable-commission agency

Notice 709/5 §2.9 lists core Margin Scheme supplies (accommodation, passenger transport, hire of a means of transport, excursions, guides, airport lounges). In-house supplies (own resources or materially altered bought-ins) follow different paths when packaged (§§2.12–2.13). Gate 2 fails if the agent cannot tell a bought-in hotel night from an owned hotel stay, or if identifiable agency commission is blended into a false TOMS selling price.

Gate 3 — Block invented full-price VAT lines on TOMS baskets

Under TOMS, VAT is accounted for on the **margin**, with provisional percentages during the year and a mandatory year-end calculation (Notice 709/5 §§5.1–5.14, 10–12). Gate 3 fails if the quote UI shows “VAT £X = 20% × package total” as if TOMS were normal VAT on the full fare, or if the model invents reclaimable input VAT on bought-in Margin Scheme hotels/flights contrary to §2.6 / §4.4.

Gate 4 — Invoice artefact: TOMS legend, never a fake VAT invoice

Notice 709/5 §4.19: VAT invoices **cannot** be issued for TOMS supplies; business customers need a TOMS indication instead. Gate 4 fails if the assistant offers to “email a VAT invoice” for a TOMS package, or omits the required scheme wording on B2B consumption sales.

Gate 5 — Enjoyment geography and tax point before confirmation copy

Margin liability depends on where the tour is enjoyed (§4.8); mixed UK/non-UK journeys may need apportionment (§§4.9–4.12). Tax point follows departure/occupation and, under method 2, payment thresholds (§§4.13–4.14). Gate 5 fails if confirmation copy promises a tax point or VAT period the booking state machine has not computed from configured method and payment events.

Gate 6 — Post-2 January 2026 transfer eligibility (taxi/PHV vs packaged ancillary)

RCB 8/2025 excludes taxi/PHV suppliers from the TOMS tour-operator definition from 2 January 2026, with an exception where the journey is supplied in conjunction with and ancillary to accommodation or certain other passenger transport. Gate 6 fails if a standalone PHV/taxi product is still quoted under TOMS after that date, or if a traditional package transfer that **does** qualify for the exception is wrongly forced onto normal full-fare VAT without tax sign-off.

Operator checklist before you arm the quoting agent

• Capacity flag per SKU/basket path: principal / undisclosed / disclosed — with named principal when disclosed.
• Component taxonomy: Margin Scheme bought-in vs in-house vs identifiable-commission agency.
• TOMS eligibility engine returns ALLOW / DENY with reason codes (not free-text model guesses).
• Quote and checkout UI: no full-price VAT invention on TOMS; show commercial total honestly; keep tax accounting in finance systems.
• Document templates: TOMS legend vs VAT invoice vs agency commission invoice — selected by classification, not by chat.
• Enjoyment geography + tax-point method loaded from finance configuration.
• Transfer products: standalone taxi/PHV vs packaged ancillary rules evaluated against the 2 January 2026 boundary.
• Human tax/finance override path for ambiguous packages; AI may not “decide TOMS” from marketing copy alone.
• Logging: classification decision, evidence refs (contract/SKU ids), invoice artefact type, and gate failures stored for audit.
• Do not conflate TOMS with ATOL, PTR, or consumer-pricing duties — those gates remain separate.

What this article is not

• Not a TOMS year-end calculator, provisional-percentage worksheet, or substitute for Notice 709/5 §§8–12.
• Not advice on VAT registration, partial exemption, or your specific B2B wholesale opt-out under §§3.1–3.2.
• Not a claim that Kaize has implemented TOMS for a named client — no invented case studies.
• Not an update to homepage, services, or pricing pages (those remain approval-required).

How Kaize frames the build

Kaize designs travel and hospitality AI so **control planes sit in front of models**. HMRC TOMS and disclosed-agent readiness is one of those gates: the quote-and-invoice path does not emit a package tax story until capacity, component class, TOMS eligibility, invoice artefact type, enjoyment/tax-point hooks, and post-2 January 2026 transfer rules are live on structured data. That is how UK tour operators keep generative packaging useful without turning the basket into an ungoverned VAT inventing machine.

Sources for operators to read next: Tour Operators’ Margin Scheme (VAT Notice 709/5); Travel agents (VAT Notice 709/6); Revenue and Customs Brief 8 (2025) — TOMS and taxi/PHV supplies; Value Added Tax Act 1994 s.53 context via the Notice; related Kaize gates on ATOL certificates, PTR insolvency cover, and DMCC drip pricing.