Tools and providers
Funnel build cost UK: VAT, MTD and the lines to check
A funnel build cost UK guide: net and VAT lines, Making Tax Digital invoicing, the ICO fee and the recurring costs most quotes leave out.
What to take away
- A funnel build cost UK figure is a net number plus VAT plus a small compliance tail; the signed total is rarely the number first quoted.
- A typical UK mid-market B2B funnel build is £10,000 to £25,000 net, £12,000 to £30,000 gross at 20% VAT, as a clearly labelled illustrative range. Making Tax Digital does not change that total.
- HMRC VAT registration thresholds decide whether your supplier adds 20% at all, and whether you can reclaim it.
- Standard rate VAT applies to most funnel and software services, but not to every line, so the rate must be shown per line.
- Making Tax Digital for Income Tax changes the supplier's invoicing stack, not your price, though it can change payment timing.
- Build the model line by line in pounds, then reforecast against ONS price indices rather than accepting a rolling quote.
- The ICO data protection fee is a real annual line for any funnel that collects personal data.
What a UK funnel build quote contains before tax is mentioned
A UK funnel build quote is a net-of-VAT document. It states a price for work, not a price for a purchase. Finance leads signing it should read every line as a pre-tax input.
Inside vs outside the net quote
Inside the net figure
- Labour
- Included
- Subcontractor time
- Included
- Resold licences
- Included
- Third-party fees
- Included
- Advertising spend
- Not included
- Domain renewals
- Not included
- Payment processing
- Not included
- Your staff time
- Not included
Outside the net figure
- Labour
- Not included
- Subcontractor time
- Not included
- Resold licences
- Not included
- Third-party fees
- Not included
- Advertising spend
- Included
- Domain renewals
- Included
- Payment processing
- Included
- Your staff time
- Included
Typical lines are discovery and funnel mapping, copy and offer structure, page build, and form and CRM integration. Tracking, consent and testing usually follow. Each has a different VAT treatment in principle, even when the supplier bills them at one rate.
The quote should also name the software subscriptions the client will hold. In UK practice those are usually a landing-page builder such as Unbounce or Webflow, a form and survey tool such as Typeform, a CRM such as HubSpot or Pipedrive, and an automation layer such as Zapier. Those are the lines that keep costing after launch, and they belong in your whole-life cost ledger rather than in a separate budget.
A quote without a validity period is not a quote, it is an estimate. Ask for the date the numbers were built and the assumptions behind them.
What belongs in the net figure
The net figure covers labour, subcontractor time, licences the agency resells, and any third-party fees the agency pays on your behalf. It should not quietly include VAT, because VAT is added later and shown separately on the invoice.
If a supplier quotes a single round number with no breakdown, you cannot check it against anything. You also cannot reforecast it later.
What usually sits outside it
Advertising spend, domain renewals, payment processing fees and your own staff time sit outside the agency quote. So does the ICO data protection fee, which is your obligation if you are the data controller. More on that below.
HMRC VAT registration thresholds and when they change the invoice
A UK business must register for VAT once its taxable turnover goes over the registration threshold in a rolling 12-month period. The threshold is set by HMRC under the Value Added Tax Act 1994 and changes at Budgets, so check the current figure in VAT Notice 700/1, Should I be registered for VAT?, rather than a remembered one. Registration is made on form VAT1. The rules and duties are set out in HMRC's guidance on when to register.
For a buyer, the practical question is simple. Is the supplier VAT registered, and will they add VAT to this quote?
Will VAT be added?
Is the supplier VAT registered?
Invoice rises by the applicable rate
Invoice equals the net quote, no input VAT to reclaim
Why a small agency quote can jump
A growing agency can cross the threshold mid-project. If your quote was issued before registration and the invoice after, the signed price can change without any change in scope. That is a contract risk, not a pricing trick.
Good suppliers state whether the quote is inclusive or exclusive of VAT, and what happens if their registration status changes before invoicing.
What VAT registration means for you
If you are VAT registered and can reclaim, VAT is largely a cash-flow item. If you are not, it is a real cost. That single fact changes which supplier is cheaper, and it is why comparing two quotes without checking registration status is meaningless.
VAT rates on software services and how they land on a pounds quote
Most funnel build work is standard rated. Design, development, consulting and most software licences carry the standard rate, currently 20%. The charge comes from the Value Added Tax Act 1994, and HMRC's VAT Notice 700, The VAT Guide, sets out which goods and services fall where.
VAT treatment by quote line
Quote line
- Funnel strategy and copy
- Standard rate
- Page build and development
- Standard rate
- Third-party software licence
- Standard rate
- Hosting billed by agency
- Standard rate
- Training to a charity
- Reduced or zero
- Supply outside the UK
- Outside scope
Typical VAT treatment
- Funnel strategy and copy
- Adds 20%
- Page build and development
- Adds 20%
- Third-party software licence
- Adds 20%
- Hosting billed by agency
- Adds 20%
- Training to a charity
- Check relief
- Supply outside the UK
- No UK VAT
Effect on pounds total
- Funnel strategy and copy
- Page build and development
- Third-party software licence
- Hosting billed by agency
- Training to a charity
- Supply outside the UK
Some lines are different. A few education or charity-related supplies can be reduced or zero rated, and certain exports sit outside UK VAT. Those are exceptions, and they should be named on the quote rather than assumed.
VAT rates on software services
| Quote line | Typical VAT treatment | Effect on the pounds total |
|---|---|---|
| Funnel strategy and copy | Standard rate | Adds 20% to the line |
| Page build and development | Standard rate | Adds 20% to the line |
| Third-party software licence resold | Standard rate | Adds 20% to the line |
| Hosting billed by the agency | Standard rate | Adds 20% to the line |
| Training delivered to a charity | Possibly reduced or zero | Check the specific relief |
| Supply to a business outside the UK | Outside the scope of UK VAT | No UK VAT added |
Treat that table as a prompt, not advice. The exact treatment depends on what is supplied, to whom, and where the customer belongs.
The reverse-charge trap
If you buy services from an overseas supplier, you may have to account for VAT yourself under the reverse charge. That means a foreign quote can look cheaper and settle higher once your accountant posts it.
Showing VAT per line
Ask for VAT shown against each line, not just a total at the foot. It makes the invoice checkable and it makes reforecasting possible when one line changes.
Making Tax Digital for Income Tax and the supplier's invoicing stack
Making Tax Digital for Income Tax changes how sole traders and landlords keep records and send updates to HMRC. It does not change the VAT rate on your funnel build. It changes how your supplier issues and stores invoices.
That matters to you in three ways: invoice format, payment timing, and how quickly a query gets answered during a filing period.
A supplier using MTD-compatible invoicing software can issue a compliant invoice, record it in digital records, and reconcile it without rekeying. HMRC publishes a list of recognised software that is compatible with Making Tax Digital for Income Tax, and the step-by-step rules for sole traders and landlords sit alongside it.
Among the products on HMRC's recognised list are Xero, QuickBooks and FreeAgent. A supplier's answer should name a product that appears on that list, not just a category of tool.
What to ask a sole trader supplier
Ask which software they use for digital records and whether it is recognised as MTD-compatible. Ask how they handle a corrected invoice. Ask what happens if you need a duplicate for your own records months later.
Why it affects your cash flow
A supplier filing quarterly has a reason to invoice promptly and chase promptly. That can tighten your payment terms in practice, even when the contract says 30 days.
How to build a line-by-line funnel build cost model in pounds
This is the core of the article. Build the model in a spreadsheet, one row per line, in pounds, with VAT as a separate column. Do not model a single blended number.
Build the cost model
- List every deliverable, one per row, net pounds
- Add VAT treatment and rate per row
- Add recurring subscriptions, monthly or annual
- Add ICO fee, consent tooling, accessibility testing
- Total net, total VAT, show gross separately
- Add reforecast column with date last checked
The ICO charges an annual data protection fee under the Data Protection (Charges and Information) Regulations 2018 for organisations that process personal data. The fee is tiered by headcount and turnover — micro, small and medium, and large. A funnel with a form almost always processes personal data, so this line belongs in the model. The exemptions are narrow: they cover processing only for purposes such as staff administration, advertising and marketing, or accounts and records, so check the ICO's published criteria rather than assuming one applies.
A worked example
Take a mid-market B2B funnel: strategy and funnel mapping, six pages, CRM integration, a consent banner, and a three-month optimisation retainer. Model it as four rows — build labour, software subscriptions, the ICO fee, and VAT — and put a date on every one of them.
For a concrete UK figure, a mid-market B2B funnel of that scope is typically quoted at £10,000 to £25,000 net, so £12,000 to £30,000 gross once 20% VAT is added.
Monthly software lines often total £150 to £600, and the ICO fee is £40 to £60 a year for a micro organisation or £2,900 for the top tier. Treat those as clearly labelled illustrative ranges.
Build the gross figure from named rows, so any one of them can be challenged or changed before you sign.
Where quotes quietly drift
Quotes drift when the software stack changes mid-build, when the client adds pages without a change note, and when a subscription price rises before renewal. Each of those is visible in a line model and invisible in a lump sum.
Keep the original quote alongside the live model. That is what a proper budget template is for: provenance, not decoration.
Recurring lines you should not forget
Hosting, form handling, email sending, analytics, consent management, and the CRM seat count. Each renews on its own cycle. Each can rise at renewal without any change to your funnel.
Inflation, reforecasts and the ONS price indices behind a quote
A quote is a snapshot. Between the date it was built and the date you sign, prices move. The ONS publishes the UK's inflation and price indices, including the Consumer Prices Index (CPI) and the Retail Prices Index (RPI), which give you a defensible way to reforecast rather than argue.
Use the index that matches the line. Service labour does not move with the same index as hardware or energy. If the supplier will not say which index they used, ask for the date the figures were built instead.
Setting a reforecast trigger
Agree a trigger in the contract: a stated move in a named index such as CPI or RPI, a subscription renewal above a stated amount, or a scope change above a stated number of hours. Without a trigger, reforecasting becomes a negotiation.
Why dated quotes fail
A quote with no date cannot be reforecast, only renegotiated. Keep the dated quotes from the software vendors on your shortlist alongside it, so build lines and subscription lines are judged on the same baseline.
The lines that inflate fastest
Software subscriptions and contractor day rates tend to move faster than fixed build fees. Put the tightest reforecast trigger on those rows.
A quote-to-signed-contract checklist for UK clients
Work through this before you sign. Each item is checkable in writing.
Quote-to-contract checklist
- Quote states inclusive or exclusive of VAT
- Supplier VAT registration confirmed in writing
- Every line has a VAT treatment and rate
- Recurring subscriptions listed with renewal cycles
- ICO data protection fee named as client cost
- Quote carries a date and validity period
- Reforecast trigger and change control agreed
- The quote states whether figures are inclusive or exclusive of VAT.
- The supplier's VAT registration status is confirmed in writing.
- Every line has a VAT treatment and a rate.
- Recurring software subscriptions are listed with renewal cycles.
- The ICO data protection fee is named as a client cost.
- The quote carries a date and a validity period.
- A reforecast trigger and a change-control process are agreed.
Two more items belong on the contract, not the quote: who is the data controller for form submissions, and who is responsible for PECR compliance on any marketing cookies or pixels. Both are UK-specific and both are frequently left to the client by default.
The hidden lines to interrogate
Ask what happens when the funnel needs a rebuild after a platform change. Ask who pays for accessibility remediation if a complaint arises. These are the costs that surface after the subscription is paid, and they are cheaper to agree now than to argue later.
Signing on the gross figure
Sign on the gross figure with the net and VAT columns attached. If the numbers are right, the attachment costs nothing. If they are wrong, it is the only thing that saves you.
