How to Invoice as a Private Security Company in Michigan

How to invoice as a private security company in Michigan: MI sales tax 6.00% (services usually exempt), late fees capped at 1.5%/mo under Mich. Comp. Laws §438.31, written contracts required over $600. Step-by-step guide with a free template.

State sales tax
6%
Late fee cap
1.5%/mo
Net terms
30 days
Deposit
0%
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1. Michigan-specific invoice requirements

  • Sales tax line: 6.00% state rate. Most services rendered in Michigan are exempt from sales tax — but materials, parts, and tangible goods are not. State 6%; uniform statewide. No local sales tax.
  • Late-fee cap: Michigan statute Mich. Comp. Laws §438.31 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.
  • Written contract required: Michigan requires a signed agreement for any job over $600. Reference the contract number on the invoice.
  • Right-to-cancel notice: Customers in Michigan get 72-hour cancellation rights on certain home-services contracts. Disclose this in your terms.

2. Private Security Company line items + standard terms

Every private security company invoice in Michigan should itemize work clearly. Standard private security companys use Net 30 terms with no deposit required.

  • Unarmed officer — per hour — billed by hour (~$35 default).
  • Armed officer — per hour — billed by hour (~$65 default).
  • Vehicle patrol — billed by flat.
  • Holiday surcharge — billed by pct.

3. Private Security Company licensing in Michigan

State security agency license required. Each officer must hold state guard card; armed officers need separate firearms permit.

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. Michigan customers expect digital payment options today — accepting card and ACH typically reduces days-to-paid by 30–50%.

Average invoice
$1,850
State
MI
Net terms
30 days
Deposit
0%

Michigan metro guides

Metro-specific guides include the combined sales-tax rate and local pricing benchmarks.

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