1. Maine-specific invoice requirements
- Sales tax line: 5.50% state rate. Most services rendered in Maine are exempt from sales tax — but materials, parts, and tangible goods are not. State 5.5%; uniform statewide. Lodging/meals 9%.
- Late-fee cap: Maine statute Me. Rev. Stat. tit. 9-B, §432 caps interest on unpaid invoices at 1.5% per month. Spell out the rate in writing on every invoice and in your contract — courts won't enforce undisclosed fees.
- Right-to-cancel notice: Customers in Maine get 72-hour cancellation rights on certain home-services contracts. Disclose this in your terms.
2. General Contractor line items + standard terms
Every general contractor invoice in Maine should itemize work clearly. Standard general contractors use Net 30 terms with a 25% deposit required upfront.
- Mobilization — billed by flat.
- Labor — billed by hour (~$85 default).
- Materials — billed by itemized.
- Subcontractor markup — billed by percent.
3. General Contractor licensing in Maine
Most states require a general contractor license over a job-value threshold (varies $500-$50K). Bonding and insurance commonly required.
4. Send and follow up
Send the invoice the same day work completes. Use software that records open events and offers a one-click online payment so you don't need to chase a check by mail. Maine customers expect digital payment options today — accepting card and ACH typically reduces days-to-paid by 30–50%.
Average invoice
$4,850
State
ME
Net terms
30 days
Deposit
25%
Maine metro guides
Metro-specific guides include the combined sales-tax rate and local pricing benchmarks.