An elegant Cotswold stone country house on a rural estate at golden hour

Stop leaving VAT
on the table

Take control of construction VAT.

VATBuild finds potential savings, checks invoices before you overpay, and helps prepare eligible HMRC refund claims. Less paperwork, less stress and greater confidence.

For New Builds, Conversions, Renovations and Energy Efficient Retrofits

Free to get started · No card required

VAT431NB

Building a new home from scratch

Reclaim VAT on materials under the HMRC DIY Housebuilders scheme (VAT431NB). Typical savings of £15,000–£40,000.

VAT431C

Turning a non-residential building into a home

Barn, office, pub, or shop — convert to residential and reclaim VAT on your construction costs (VAT431C).

Reduced Rate

Bringing a vacant dwelling back to life

Properties empty for 2+ years may qualify for reduced-rate VAT on renovation work — saving up to 15% on eligible costs.

Refurbishment, Retrofit, Renovation.

Unlock the significant savings VAT rules support. Energy Saving Materials and Disability allowances allow you to do more for less.

Inside VATBuild

Straightforward, clear.

Practical project tools bring invoices, planning and VAT preparation into one place.

Know what to do next.

Keep track of key project tasks, documents and status

VAT Actions · Example project

VAT Actions checklist showing project documents, VAT checks and preparation task statuses. — VAT Actions · Example project · Select image to enlarge

Plan with VAT in view.

Organise your work packages and generate a bespoke VAT Opportunity report explaining your project’s VAT treatment and opportunities. Download it and share it with your project team.

Project planning · Example project

Project planning work packages with tasks and their project-specific VAT treatment. — Project planning · Example project · Select image to enlarge

431NB qualifying new-build example planning report showing VAT Opportunities and supporting information. — VAT Opportunity report · 431NB qualifying new-build example · Select image to enlarge

See where your project spend goes.

Review invoice totals and spending by work category and supplier.

Spend overview · Example project

Spend overview with invoice totals and project spending grouped by work category and supplier. — Spend overview · Example project · Select image to enlarge

Quickly review each invoice.

VATBuild checks invoices against HMRC rules and ensures they have the right VAT treatment.

Invoice review · Example project

Example invoice review panel with a building-material line item, its VAT amount, and individual add-to-claim or exclude-from-claim controls. — Invoice review · Example project · Select image to enlarge

Built around your project lifecycle

VATBuild guides you through every stage — from setting up before work begins to generating your HMRC report at the end.

Pre-Start

Know your position before you begin

VATBuild assesses your VAT pathway against HMRC guidelines.
VATBuild sets up your project work packages and their individual VAT rates
VATBuild produces an individual project VAT report for you and your project team to help ensure your VAT treatment is most efficient and HMRC compliant.

During Works

Process invoices as they arrive

Make sure you only pay when the invoice is correct
Upload PDFs, photos, or scanned receipts and invoice, and link invoices from SAGE, Xero or Quickbooks.
VATBuild invoice assistant checks each invoice, following the VAT rules for your specific project
VATBuild provides fully HMRC evidenced supplier correction request emails with one click

Project Completion

Submit with confidence

Live spend tracking and reporting to help complete on budget
Easily generate PDF, Excel, or CSV reports for your accountant
Secure digital storage of all VAT critical invoices and documents
Walk-through of HMRC forms, pre-filled from your project data

Everything in one place

Every tool you need to build, check, and submit a defensible HMRC VAT reclaim — without the spreadsheet headache.

Invoice analysis

Upload PDFs, photos, Word docs, or Excel files. VATBuild reads every document, extracts each line item, and checks it against HMRC Notice 708 — automatically.

Supplier correction emails

When a contractor charges the wrong VAT rate, VATBuild flags it and drafts a professional correction request email pre-filled with the invoice details and the correct rate.

Live VAT registration check

Before paying a VAT invoice, instantly verify your supplier is genuinely registered with HMRC. A single click checks the live HMRC database — so you never reclaim VAT a supplier wasn't entitled to charge.

Claim Readiness score

A live score out of 100 tracks invoice quality, document completeness, photo evidence, and HMRC deadline — so you know exactly what to fix before submitting.

VAT Actions

A built-in checklist of everything that needs managing throughout your project — completion certificates, supplier VAT records, claim deadlines, and more. Nothing falls through the cracks before you submit.

HMRC form pre-fill

VAT431NB and VAT431C form fields populated from your project data. Copy them straight to the HMRC form — no re-keying, no errors.

Compliance audit

Before you submit, VATBuild reviews every line item in your claim for overclaiming risks — with specific HMRC rule references for anything flagged.

Live spend tracking

Track total spend by supplier and category in real time as invoices are uploaded. See exactly where the budget is going and what the VAT position looks like at every stage of the project.

Works on any device

Fully responsive — photograph and upload an invoice onsite from your phone, then review and generate reports from your desktop. No separate apps needed.

Built for the industry around every self-build

VATBuild works with the professionals and organisations that support self-build and conversion clients — not just the clients themselves.

Mortgage Lenders & Brokers

Support borrowers with a practical VAT control layer throughout staged drawdowns — from first advance to final HMRC reclaim.
Create an accurate budget - clients can identify potential VAT costs and reclaim routes earlier, don’t let their budget depend on an unchecked VAT assumption.

Pre-Construction Professionals

Give clients a structured answer to their VAT questions — without taking on tax advice responsibilities yourself.
Help clients identify potential VAT savings before designs, budgets and contracts are finalised.

Planning Portals & Partners

Extend the post-permission journey into construction VAT control, with referral pathways for self-build and conversion applicants.
Give clients access to structured support with VAT project planning, budget management and HMRC claims.

Learn more about industry partnerships

Simple, honest pricing

Free

£0

Understand your project’s VAT position

Create a project
Assess VAT treatment for your project
VAT Actions
Key tasks for your project

VAT Planning

£95/project

One-off payment for your project

VAT work-package plan
Bespoke VAT Opportunity report
Download and share with your project team

Ready to build your claim?

HMRC only allows one VAT431NB or VAT431C submission per project. VATBuild helps you get it right the first time.