How to Invoice as a Mobile App Developer in Pennsylvania

How to invoice as a mobile app developer in Pennsylvania: PA sales tax 6.00% (services usually exempt), late fees capped at 1.5%/mo under 41 Pa. Cons. Stat. §201, written contracts required over $5,000. Step-by-step guide with a free template.

State sales tax
6%
Late fee cap
1.5%/mo
Net terms
30 days
Deposit
33%
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1. Pennsylvania-specific invoice requirements

  • Sales tax line: 6.00% state rate. Most services rendered in Pennsylvania are exempt from sales tax — but materials, parts, and tangible goods are not. State 6%; Allegheny +1%, Philadelphia +2%. Many services exempt.
  • Late-fee cap: Pennsylvania statute 41 Pa. Cons. Stat. §201 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: Pennsylvania requires a signed agreement for any job over $5,000. Reference the contract number on the invoice.
  • Right-to-cancel notice: Customers in Pennsylvania get 72-hour cancellation rights on certain home-services contracts. Disclose this in your terms.

2. Mobile App Developer line items + standard terms

Every mobile app developer invoice in Pennsylvania should itemize work clearly. Standard mobile app developers use Net 30 terms with a 33% deposit required upfront.

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

3. Mobile App Developer licensing in Pennsylvania

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

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

Average invoice
$8,500
State
PA
Net terms
30 days
Deposit
33%

Pennsylvania metro guides

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

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