How to Invoice as a General Contractor in Iowa

How to invoice as a general contractor in Iowa: IA sales tax 6.00% (applies to services), late fees capped at 1.5%/mo under Iowa Code §535.2. Step-by-step guide with a free template.

State sales tax
6%
Late fee cap
1.5%/mo
Net terms
30 days
Deposit
25%
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1. Iowa-specific invoice requirements

  • Sales tax line: 6.00% state rate. Services billed to IA customers must include sales tax. Many services taxable (info, repair, transportation). Combined 6-7%.
  • Late-fee cap: Iowa statute Iowa Code §535.2 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 Iowa 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 Iowa 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 Iowa

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

Average invoice
$4,850
State
IA
Net terms
30 days
Deposit
25%

Iowa metro guides

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

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