#46 most asked· Invoicing, payments & cash collection
Approve the extra on site, before the tools come back out
The tech adds a scope item, the customer e-signs on the spot, and the variation auto-merges into the final invoice.
By Daniel Hall · Automation builder at Made 4 Tradies
Most disputes about extras start the same way: a tech finds something mid-job, mentions it verbally, does the work, then adds it to the invoice weeks later. By then the customer has forgotten the conversation and the margin turns into an argument. This automation closes that gap on site. When the tech finds extra scope, they add it as a line item on their phone, attach a photo, and hand the device to the customer to e-sign. The signed variation is stamped with a time and stored against the job, then auto-merges onto the final invoice as its own clearly-labelled line. Nobody has to remember the conversation, because the customer agreed and signed before the work was done. The example here is a switchboard upgrade in Cessnock where the tech finds a corroded sub-main: $640 added, photo attached, signature captured, and it lands on the $3,120 final invoice as a tracked variation. The dollar figures shown are one illustrative job, not a benchmark.
See it in action
The flow, end to end
What the customer signs on site
Job #1182 · Cessnock
Switchboard upgrade — M. Petrović
14 Vintage Dr, NSW 2325
Added on site
Replace corroded sub-main
Found during upgrade — existing 16mm cable failed insulation test. Supply & install 25mm + labour.
Customer signature
Approved 2:14 PM · copy emailed to both parties
Final invoice — auto-merged
The signed extra lands on the final invoice as its own line, with the on-site photo and signature stored against it.
Why it matters
Disputed extras eat margin and trust.
On-site approval makes the change-order non-negotiable: the customer agreed, signed, and has the photo — before the work was done.
Less paper to chase
One r/Construction owner says he spends “half my day just chasing paper” — copy-pasted RAMS, loose sign-offs. This keeps the approval on the record instead.
How it works
Trigger → actions → outcome
- 1
Trigger
The tech finds extra scope mid-job and opens the variation on their phone rather than making a mental note for later.
- 2
Action 1
They add the extra as a line item with a price and snap a photo of the issue as evidence (the corroded sub-main here).
- 3
Action 2
The customer reviews the line item and photo on the device and e-signs to approve it on the spot.
- 4
Action 3
A time-stamped copy of the signed variation is emailed to both parties and stored against the job record.
- 5
Outcome
The approved extra auto-merges onto the final invoice as its own labelled line, so the customer has already agreed before they ever see the total.
What this means for your business
The numbers behind it
$640
Extra captured on site
Illustrative — one job in this example, not a benchmark
Signed
Before the work was done
Photo plus signature stored against the job
"Half my day"
Spent chasing paper
Reported by one r/Construction owner on Reddit
Questions
Common questions
- What does the "On-site variation / change-order with e-sign" automation do?
- The tech adds an extra scope item on site, the customer e-signs, and the variation auto-merges into the final invoice.
- Why would a tradie business want this?
- Disputed extras eat margin and trust. On-site approval workflows are non-negotiable.
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Tell us a bit about your setup and we'll come back with a quote and a build plan. Usually within 24 hours.
Get this built →Built only after a scoping chat. No surprise invoices.
