1. Montana-specific invoice requirements
- Sales tax line: 0.00% state rate. Most services rendered in Montana are exempt from sales tax — but materials, parts, and tangible goods are not. No general state sales tax. Resort areas may have local sales tax up to 3%.
- Late-fee cap: Montana statute Mont. Code §31-1-106 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 Montana get 72-hour cancellation rights on certain home-services contracts. Disclose this in your terms.
2. Attorney line items + standard terms
Every attorney invoice in Montana should itemize work clearly. Standard attorneys use Net 30 terms with a 100% deposit required upfront.
- Hourly billing — billed by hour (~$350 default).
- Flat fee — service — billed by flat.
- Filing fees (cost advance) — billed by itemized.
- Trust deposit (IOLTA) — billed by flat.
3. Attorney licensing in Montana
Bar admission required. Trust accounting (IOLTA) governed by state bar rules; commingling client funds is sanctionable.
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. Montana customers expect digital payment options today — accepting card and ACH typically reduces days-to-paid by 30–50%.
Average invoice
$2,800
State
MT
Net terms
30 days
Deposit
100%
Montana metro guides
Metro-specific guides include the combined sales-tax rate and local pricing benchmarks.