Quotation
Customers always compare several outfits. The one that sends a quotation as a file with a valid-until date looks more credible than the one that answers with a LINE message — and you can put a deposit QR on the same sheet.
Repair technicians, air-con technicians and contractors
Quote in a way that looks credible, take the deposit right away, and chase a stage payment without losing the customer
Trade work loses to paperwork more often than you would think. The customer asks the price over LINE, the technician answers with a long message, the customer takes it and compares it with another outfit that sent a quotation as a file — and the job is gone, even though the price was the same or even cheaper.
This page collects the tools a technician can use from a phone while standing at the job: from a quotation with a QR for taking the deposit, to the receipt when the job is closed, to a stage-payment chasing message polite enough not to make the customer disappear. All of it is free and works in your browser.
The 6 most used tools
Press the example button to open the tool with made-up shop details already in it, then change them to your own shop's straight away
Receipt / cash bill
Customers in housing estates and company customers usually ask for a receipt when they pay. Writing out a bill book by hand at the job is both slow and hard to read; issuing it from your phone and sending it into LINE is finished faster.
PromptPay sign
Collecting payment at the job and finding the customer has no cash is normal. A QR with the amount already on it means you do not have to read out your account number over the phone, and it reduces the chance of a transfer going to the wrong account.
Polite payment reminder
An overdue stage payment is a sensitive matter. A message that is too hard loses you a regular customer. Three ready-made levels of message let you chase without having to think up the words yourself.
Link-in-bio / QR card
Most technicians have no website, but every day they have to send customers a phone number, a LINE and a map. A QR business card gathers every channel into a single image, easy to forward in a housing-estate group.
Opening hours sign
A technician who takes jobs in rounds has to say clearly from what time to what time they take calls. An hours sign on the shopfront, or an opening-hours image sent over LINE, cuts off-hours calls a lot.
Fictional example The example details are a made-up shop, not a real one. Once it opens you can change them to your own straight away, and you can press stop using the example to get your own details back.
A worked example of the sums
A real worked example: cleaning 3 air-con units, taking a 30% deposit
Suppose you quote for cleaning 3 wall-type air-con units at 600 baht each, plus a refrigerant top-up on 1 unit at 800 baht, with no VAT charged because the business is not yet registered for VAT.
- Air-con cleaning = 600 × 3 = 1,800.00 baht
- Refrigerant top-up = 800 × 1 = 800.00 baht
- Grand total = 2,600.00 baht
- Deposit of 30% = 2,600 × 30% = 780.00 baht
- Left to collect on the day of the job = 2,600 − 780 = 1,820.00 baht
The unit prices are invented numbers, purely to demonstrate the method — they are not a market standard rate. Put in your own real prices, and if your business is already registered for VAT, turn on the 7% VAT option in the tool so the totals match what you have to issue a tax invoice for.
Frequently asked questions
What has to be on a technician's quotation?
At a minimum it should have the name and phone number of whoever is quoting, the customer's name, the list of work with quantities and unit prices, the total, the date of issue and the date the price is valid until. If you are taking a deposit, state the deposit amount and how to pay it on the same sheet. Our quotation tool puts all of this in and runs the document number on for you automatically.
How much of a deposit is the right amount to take?
There is no fixed number and the law does not set one. Many technicians work it out from the cost of what they have to buy in advance — parts or materials, for example — and then add part of the labour. What matters more than the number is stating clearly in the quotation how much the deposit is, what it covers, and in which cases it is or is not refunded.
How do I chase payment without losing the customer?
Start with a politely toned message that refers to the document and the due date straightforwardly, attach a QR with the amount already on it so it is easy to pay in one click, and only then get firmer if it has been overdue for a long time. The payment-chasing message tool has three tones to choose from and puts the PromptPay QR into the same image for you.
Other occupations: Coffee shops / drinks shops