How to Invoice as a Plumber in Lewiston, ME

Invoicing guide for plumbers in Lewiston: 5.5% ME sales tax, 1.5%/mo late-fee cap, plus ME licensing and contractor rules.

Combined sales tax
5.5%
Late fee cap
1.5%/mo
Net terms
14 days
Deposit
30%
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1. Lewiston-specific tax handling

  • State sales tax: 5.5%. Local jurisdictions in Lewiston may add their own rate — verify with your local tax assessor.
  • Late fees: ME statute Me. Rev. Stat. tit. 9-B, §432 caps interest on unpaid invoices at 1.5% per month.

2. Standard plumber line items

  • Service call fee — billed by flat (~$95 default).
  • Labor — billed by hour (~$110 default).
  • Materials — billed by itemized.

3. Payment terms that work in Lewiston

Net 14 is standard for plumbers. Most plumbers in competitive markets like Lewiston require a 30% deposit upfront before scheduling work. Accept card and ACH on the invoice itself — Lewiston customers expect a one-click payment link in their inbox.

4. Licensing & disclosures

State-licensed in most states. Master plumber license typically required for self-employment.

Metro
Lewiston
State
ME
Net terms
14 days
Deposit
30%

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