Wedge

WhatsApp invoicing for builders

Send a staged-payment quote for an £18k extension without losing a Saturday to admin. Wedge turns one WhatsApp message into a professional quote or invoice — only 1% when you actually get paid, capped at £50 per invoice.

Wedge
Wedge
Invoice Dave Smith £350 for kitchen tiling

Wedge

Invoice INV-014 for £350 sent to Dave Smith. ✉️

Wedge

Dave Smith paid £350 for INV-014. 💰
Get started for free

Only pay when you get paid. 1% per invoice, capped at £50.

STEP 01

Send a message

Text Wedge on WhatsApp with the job details, customer name, and amount.

9:41
Wedge
Wedge

Message

STEP 02

We handle the rest

Wedge creates a professional invoice and emails it to your customer with a payment link.

9:41

From: invoices@wedge.uk

Invoice INV-014 from Mike's Tiling

Mike's Tiling

mike@example.com

INV-014

8 Mar 2026

Bill to

Dave Smith

Kitchen tiling£350.00
Total due£350.00

Secure payment powered by Stripe

STEP 03

Get paid

Your customer pays online. You get a WhatsApp notification when the money lands.

9:41
Wedge
Wedge

Message

Everything you need to get paid

-WhatsApp-native

No app to install. Just message Wedge on WhatsApp like you would a mate.

-AI-powered parsing

Tell us who to invoice and how much. We figure out the rest.

-Professional invoices

Clean, branded PDF invoices sent straight to your customer via WhatsApp.

-Stripe payments

Your customers pay online by card. Money lands in your bank account.

-Automatic reminders

We chase late payers so you don't have to. Polite but persistent.

-VAT support

VAT-registered? We calculate and show VAT on every invoice automatically.

A real job

An £18,500 loft extension, broken into stage payments

You've won a loft extension job — £18,500 inclusive of materials, labour, and Building Control. The customer wants to pay in stages: 20% deposit on signature, 25% at first fix, 25% at second fix, 20% on completion, 10% retention released after 30 days. Message Wedge: "Quote Tom Williams £18,500 for loft extension at 22 Beech Close, broken into 20% deposit, 25% first fix, 25% second fix, 20% completion, 10% retention." Wedge generates the quote with the schedule clearly laid out. Tom signs digitally and pays the £3,700 deposit immediately — £3,663 lands in your account. As you hit each stage, you message Wedge to send the next invoice. The retention sits in customer's account; you message Wedge to invoice for it after 30 days. Total Wedge fees on the £18,500 job: £185. No subscription you have to pay even on a slow month.

Free forever. 1% only when your customer pays — capped at £50 per invoice.

No subscription, no setup fee, no card-on-file fee. We only earn when you actually get paid.

Only pay when you get paid
1% per paid invoice

Free forever. No monthly fee.

  • Unlimited invoices & quotes
  • Expense tracking
  • WhatsApp notifications
  • Stripe payment links
  • Automatic reminders
  • Professional PDF invoices
  • VAT support

See the math

Type any invoice amount. Toggle the payment method to compare.

£
Invoice amount£495.00
Stripe processing (1.5% + £0.20)−£7.63
Wedge fee (1%)−£4.95
You receive£482.42

Bank-transfer invoices remain free — we only charge when the customer pays by card or Open Banking.

Frequently asked questions

Can I send staged-payment invoices linked to a single quote?+

Yes. Send Wedge the schedule once ("20% deposit, 30% first fix, 50% completion"), and we'll generate each stage invoice when you tell us the stage is done. The customer sees the schedule on the original quote so there are no surprises.

What about CIS deductions when I subcontract for main contractors?+

If you subcontract under CIS, mention it when invoicing ("CIS deduction at 20%") and Wedge will show the gross amount, the 20% CIS deduction, and the net amount payable. The contractor pays you the net; HMRC paperwork stays your responsibility.

How do retentions work — can I invoice the held-back amount later?+

Yes. When you set up staged payments, include the retention as the last stage (e.g. "10% retention released after 30 days"). Customer pays everything else upfront; you message Wedge to send the retention invoice when the period ends.

Can I invoice for materials separately from labour?+

Yes — useful when customers want to see exactly what they're paying for. Tell Wedge "£4,500 materials, £6,000 labour" and the invoice breaks them out as line items. You can also add reverse-charge VAT if applicable.

Do I need to add VAT on residential domestic projects?+

If you're VAT-registered, yes — standard 20% VAT on most domestic work. Wedge calculates and shows VAT automatically. For specific reduced-rate work (renovations of empty homes, conversions), you can override to 5% per line item.

How do I handle change orders during a build?+

When a customer asks for an addition ("actually, can you add a roof window?"), message Wedge to send a separate change-order invoice. Customer agrees and pays in WhatsApp — no awkward conversations about scope creep.

Ready to stop chasing invoices?

Join tradespeople across the UK who get paid faster with Wedge.

Get started for free

© 2026 Wedge AI Ltd. All rights reserved.

Invoicing for Builders — WhatsApp Invoicing | Wedge