Founders
£39/mo
Just you. One login, the whole app.
- Quotes, deposits, booking, calendar, invoices, chasing
- VAT, CIS and the reverse charge on every quote and invoice
- No InstaQuote fee on card payments
Built for UK window fitters
You do the job.It does the rest.For window fitters.
A quoting app for window fitters that doesn't stop at the quote. Price the windows, the doors and the patio set from your own rates, then it takes the deposit, books the job in and gets you paid.
7 days free · No card to start · Cancel anytime
- Deposit taken by card
- Job booked into your calendar
- Invoice drafted when it's done
- Late payers chased for you
- VAT and CIS worked out
Also on your phone. Same account, same jobs.
The only bit you do
How a quote for window fitters gets built.
Walk the house and say it: five uPVC windows, a composite front door, a patio set on the back, two misted units. It comes back priced per opening off your own rates, with the VAT worked out.
Say it or photo it
Voice note the survey, or photo the openings. Windows, doors, patio sets, misted units and repairs come back as separate priced lines.
It measures, you check
Put a tape in shot, tap two points and it measures. Anything you didn't measure is marked for you to check.
Priced from your rates
Priced from your own per opening rates. Windows and doors starts you at £650 for a supplied and fitted uPVC window, £1,250 for a composite front door, £1,600 for a patio set and a £240 day rate, and you change every figure to yours.
Your price list, day one
Windows & Doors: what a new account starts with
Real UK starting prices for window fitters, already in your list on the first day. Every one of them is yours to change, and your rates are what the quotes price from.
| Work | Starter price |
|---|---|
| Supply & fit uPVC window | £650/each |
| Supply & fit composite front door | £1,250/each |
| Replace misted double-glazed unit | £140/each |
| Supply & fit sliding patio door | £1,600/each |
| Window fitter day rate | £240/day |
Starting points for 2025 and 2026, meant to be tuned to your patch. Change one in Settings and every future quote uses it.
The materials come with it
Frames, foam, silicone, trims and trickle vents come off the openings you priced, so the take off is ready when the quote is. Swap in your own supplier's prices in a tap.
You can put a names only list on the customer's copy so they can see what you are supplying, with your buying and your markup kept to yourself.
After you tap Send
Most apps stop at the quote.
Yours keeps going.
A quote is the easy half. The half that eats your evenings is the deposit, the diary, the invoice and the chasing. That is the half InstaQuote does for you.
The deposit
You set the deposit on the quote. The customer pays it by card from the link on their phone, with nothing to install, and it lands in your account through Stripe.
The booking
The deposit books the job. They pick a free slot themselves, they get the confirmation and the reminder, and they can move it themselves from the same link.
The calendar
Your week fills in as the deposits land, and it syncs to Google so the diary on your phone matches the one in the van.
The materials
The take off from the quote is ready to go to your merchants for a price, with your markup on it and kept on your side of the paperwork.
The invoice
Mark the job done and the invoice is drafted for you, priced off the quote with the extras you added on site. One tap and it's gone.
The chasing
If it goes past its date, polite nudges go out in your name until it is paid. Three at most, then it stops and tells you. You are not the bad guy and you are not on the phone.
VAT and CIS
Work for a builder, a contractor or a developer and the CIS deduction and the VAT reverse charge are worked out on the quote and on the invoice. Work straight for a homeowner and they stay off. You set it per customer, not per quote.
The books
On the Accounts plan (£89/mo) it keeps the books behind all of it: expenses, what each job actually made, and your VAT return figures ready for you or your accountant to file with HMRC.
Start free, no card
7 days of the whole thing, on real jobs, before you pick a plan.
Plain pounds, no call with sales
7 days free, then from £39 a month.
No card to start the trial, so nothing can be taken by accident. Run real jobs through it for a week, then pick a plan. If you don't, your account pauses and nothing is deleted.
Accounts
£89/mo
Everything in Founders, plus the books and the crew.
- Bookkeeping: expenses, profit per job, VAT return figures ready to file
- Up to 10 crew logins, the work without the money
- No InstaQuote fee on card payments
Complete
Our pick£99/mo
Accounts, plus a website that brings window fitters work in.
- The whole Accounts app, up to 10 crew logins
- A bespoke website built and run by our KERB Sites team
- Every enquiry from it drops into the app as a lead
Complete is £99/mo for the first 300 members and stays at that price for the life of your plan. It is £119/mo after that. Want the website on its own? It is £39/mo, on top of any plan, with no charge per enquiry.
Cancel any time from Settings, no minimum term and no phone call. During the trial the only money we take is a 2.9% InstaQuote fee on card payments you collect through it; paid plans have no InstaQuote fee at all. Stripe's standard card rate applies either way.
Asked by window fitters.
4 answers · No small print
The money questions (the trial, cancelling, your data) are answered on the homepage FAQ, and the how-to guides are in Answers.
Can I quote supply and fit and fitting only?
Yes. A supplied and fitted uPVC window is £650 to start, fitting a customer supplied one is £180, so the two never get mixed up on the quote or in the materials list.
Can I price small jobs like a misted unit or a handle?
Yes, and they are quicker to quote than to write down: a misted unit at £140, a handle or hinge repair at £65. They still get invoiced and chased like any other job.
Does it issue my FENSA or Building Regs certificate?
No. That comes from your scheme, and we will not claim otherwise. InstaQuote quotes the work, takes the deposit, books it in, invoices it and chases it if it goes unpaid.
Can I take a deposit before I order the frames?
Yes, and most fitters do. Set the deposit on the quote, the customer pays it by card on their phone, and the fitting date books itself into your calendar.