How to Invoice as a Mobile App Developer in Fond du Lac, WI

Invoicing guide for mobile app developers in Fond du Lac: 5% WI sales tax, 0.42%/mo late-fee cap, plus WI licensing and contractor rules.

Combined sales tax
5%
Late fee cap
0.42%/mo
Net terms
30 days
Deposit
33%
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1. Fond du Lac-specific tax handling

  • State sales tax: 5%. Local jurisdictions in Fond du Lac may add their own rate — verify with your local tax assessor.
  • Late fees: WI statute Wis. Stat. §138.04 caps interest on unpaid invoices at 1.5% per month.

2. Standard mobile app developer line items

  • Sprint / milestone — billed by flat.
  • Hourly — billed by hour (~$165 default).
  • App Store submission — billed by flat.
  • Maintenance retainer — billed by flat.

3. Payment terms that work in Fond du Lac

Net 30 is standard for mobile app developers. Most mobile app developers in competitive markets like Fond du Lac require a 33% deposit upfront before scheduling work. Accept card and ACH on the invoice itself — Fond du Lac customers expect a one-click payment link in their inbox.

4. Licensing & disclosures

No license required. App Store and Play Store policies must be honored.

Metro
Fond du Lac
State
WI
Net terms
30 days
Deposit
33%

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