How to Invoice as a Web Designer in Washington

How to invoice as a web designer in Washington: WA sales tax 6.50% (applies to services), late fees capped at 1.5%/mo under Wash. Rev. Code §19.52.020. Step-by-step guide with a free template.

State sales tax
6.5%
Late fee cap
1.5%/mo
Net terms
14 days
Deposit
50%
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1. Washington-specific invoice requirements

  • Sales tax line: 6.50% state rate. Services billed to WA customers must include sales tax. State 6.5%; many services taxable. Combined commonly 8.5-10.5%.
  • Late-fee cap: Washington statute Wash. Rev. Code §19.52.020 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 Washington get 72-hour cancellation rights on certain home-services contracts. Disclose this in your terms.

2. Web Designer line items + standard terms

Every web designer invoice in Washington should itemize work clearly. Standard web designers use Net 14 terms with a 50% deposit required upfront.

  • Design + build — billed by flat.
  • Hourly customization — billed by hour (~$95 default).
  • Hosting setup — billed by passthrough.

3. Web Designer licensing in Washington

No license 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. Washington customers expect digital payment options today — accepting card and ACH typically reduces days-to-paid by 30–50%.

Average invoice
$3,400
State
WA
Net terms
14 days
Deposit
50%

Washington metro guides

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

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