How to Invoice as a Plumber in Monroe, MI

Invoicing guide for plumbers in Monroe: 6% MI sales tax, 0.58%/mo late-fee cap, plus MI licensing and contractor rules.

Combined sales tax
6%
Late fee cap
0.58%/mo
Net terms
14 days
Deposit
30%
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1. Monroe-specific tax handling

  • State sales tax: 6%. Local jurisdictions in Monroe may add their own rate — verify with your local tax assessor.
  • Late fees: MI statute Mich. Comp. Laws §438.31 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 Monroe

Net 14 is standard for plumbers. Most plumbers in competitive markets like Monroe require a 30% deposit upfront before scheduling work. Accept card and ACH on the invoice itself — Monroe 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
Monroe
State
MI
Net terms
14 days
Deposit
30%

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