Wedge

Invoicing for Glasgow plumbers

WhatsApp invoicing built for plumbers working across Glasgow and West Central Scotland. Send a professional invoice from the customer's hallway — 1% per paid invoice, capped at £50, no subscription.

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.

Glasgow market

Glasgow plumbers — by the numbers

Glasgow plumbing splits sharply between tenement repair work — shared-stack replacements, kitchen and bathroom refits in Victorian Southside and West End closes — and CIS subcontract heating work on the Clyde Waterfront and Pacific Quay regeneration pipelines. The tenement stack work in particular drives an unusual amount of multi-flat invoicing: a single shared-stack replacement covers 4–8 leaseholders who need separate invoices for their share of the work, often with factor approval before payment. Day rates are below Edinburgh on residential work but competitive on specialist heating; reverse-charge VAT applies on the larger main-contractor jobs around Govan and Hillington.

Region
West Central Scotland
Population
620,000 (city), 1.8 million (metropolitan)
Self-employed tradies
Around 30,000
Day rate band
£180–£290/day
Call-out band
£50–£95
CIS prevalence
High — common across new-build and commercial sectors
Nearby areas covered
Paisley, East Kilbride, Hamilton, Clydebank, Coatbridge, Motherwell
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.

-MTD-ready records

Every invoice, expense and mileage entry stored digitally as it happens. CSV export for FreeAgent, Xero, QuickBooks or Sage.

A real job

A real Sunday emergency call-out

It's 9pm on a Sunday and Dave's boiler has packed in. You drive out, replace the diverter valve, and bleed the system. Total: £350 (£180 call-out + £100 labour + £70 parts). Sitting in the van afterwards, you message Wedge: "Invoice Dave Smith £350 for emergency boiler call-out, parts and labour." Wedge generates a clean PDF invoice, breaks out the parts and labour line items, sends it to Dave on WhatsApp with a card payment link, and chases him on day three if he hasn't paid. When Dave pays, £346.50 lands in your bank account — Wedge keeps £3.50. No subscription, no monthly fee, nothing to remember to cancel. If Dave never pays, Wedge never charges you.

Wedge near you

Working with plumbers in other UK cities — and other trades in Glasgow

Comparing invoicing apps? See Wedge vs TaskDrop for a side-by-side comparison.

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 invoice multiple flat owners for a single Glasgow tenement stack job?+

Yes — Wedge handles multi-customer billing from one shared description. Mention each leaseholder, their share, and the address; the system generates separate invoices with consistent reference numbers so the factor can reconcile against the common building works ledger.

Can I show my Gas Safe number on every invoice?+

Yes. Add your Gas Safe registration number once during sign-up and it appears on every invoice and quote you send — required for any gas work and reassuring for customers.

How do I split parts and labour on emergency call-outs?+

Just tell Wedge in plain English: "£180 call-out, £100 labour, £70 for the diverter valve." Our AI breaks it into separate line items on the invoice. You can also add VAT, mark items as zero-rated, or note them as parts-only.

What about call-out fees versus hourly rates?+

However you charge, Wedge takes it as you describe it. Mention "£90 call-out plus £55/hour for 2.5 hours" and Wedge generates clear line items with the maths done. Your customer sees exactly what they're paying for.

Can customers pay before I leave the property?+

Yes — the WhatsApp message includes a Stripe payment link. Most card payments confirm in seconds. You'll get a WhatsApp notification when the money lands, often before you've packed the van.

How do I invoice for boiler servicing contracts?+

Annual service plans work the same way — send the customer their yearly invoice via WhatsApp when the service is due. For ongoing maintenance contracts where you bill monthly, just message Wedge each month.

I subcontract for a heating company — can I invoice them with VAT?+

Yes. If you're VAT-registered, toggle that on at sign-up and Wedge calculates 20% VAT automatically. You can also invoice with reverse-charge VAT for CIS-style B2B work — just mention it when sending.

Ready to stop chasing invoices?

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WhatsApp Invoicing for Glasgow Plumbers | Wedge