How to Invoice as a Registered Dietician in California

How to invoice as a registered dietician in California: CA sales tax 7.25% (services usually exempt), late fees capped at 1.5%/mo under Cal. Civ. Code §3287; §1671 (penalty rule), written contracts required over $500. Step-by-step guide with a free template.

State sales tax
7.25%
Late fee cap
1.5%/mo
Net terms
30 days
Deposit
0%
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1. California-specific invoice requirements

  • Sales tax line: 7.25% state rate. Most services rendered in California are exempt from sales tax — but materials, parts, and tangible goods are not. Services generally exempt; tangible goods taxable. Local rates push combined to 10.75%.
  • Late-fee cap: California statute Cal. Civ. Code §3287; §1671 (penalty rule) 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: California requires a signed agreement for any job over $500. Reference the contract number on the invoice.
  • Right-to-cancel notice: Customers in California get 72-hour cancellation rights on certain home-services contracts. Disclose this in your terms.

2. Registered Dietician line items + standard terms

Every registered dietician invoice in California should itemize work clearly. Standard registered dieticians use Net 30 terms with no deposit required.

  • Initial assessment — billed by flat (~$220 default).
  • Follow-up session — billed by session (~$95 default).
  • Meal-plan package — billed by flat.
  • Insurance billing — billed by flat.

3. Registered Dietician licensing in California

RD/RDN credential plus state license required in most states. Medical-nutrition-therapy CPT codes for insurance claims.

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

Average invoice
$245
State
CA
Net terms
30 days
Deposit
0%

California metro guides

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

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