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GullySystem

Stage Billing and Retention for Waterproofing Contractors

Bills follow the stages of the job: advance, running bills and final bill. Receipts are recorded as they come in, and retention held by a builder stays on its own list until released.

Billing along the job

Waterproofing is paid in parts. A homeowner may pay an advance, a middle payment and a balance at handover, while a builder pays against measured work.

Advance

Raised when the quotation is accepted and recorded against the job. It is adjusted on the later bills.

Running bills

Raised when stages complete, from the area treated and the rates agreed. A builder’s bill follows the measurement sheet for that block.

Final bill and handover

Raised after the ponding test and signed handover, with the advance and earlier bills adjusted.

Extras and variations

Work added on site is entered as a line with its own measurement, so the client sees what changed against the quotation.

Retention and dues

A builder often holds a portion of each bill until a stated period has passed. The system lists retention separately, with the date it can be claimed. Nothing then falls off the list because it was never invoiced.

Receipts and follow-up

Cash, cheque, bank transfer and UPI receipts are matched to bills. Reminders can go by WhatsApp or SMS. Accounts sees, client by client, what is due and what is overdue.

Tax and books

Tax lines on a bill follow the settings agreed with the client’s accountant, who also advises on how retention and advances are treated in the books. An export to Tally can be scoped separately for a firm that wants one.

FAQ

Frequently asked questions

Can a bill be raised from measured work?

Yes. The area treated is entered from the stage record or a measurement sheet, and the bill is priced from the agreed rate.

How is retention tracked?

Retention is held on each bill as a separate figure and listed until it is released. The terms come from the builder’s contract.

Can a client pay by UPI?

Yes. UPI receipts are recorded against the bill. A payment link inside the invoice is confirmed during scoping.

Does it produce GST invoices?

Invoices carry the tax lines set up with your accountant. Which rate applies to a type of work is for the accountant to advise.

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