A therapy invoice template for a private-pay practice needs your practice details and credentials, the client's name, an invoice number and date, one line per session with the date, the service in plain words and the fee, any payments received, and the balance due with a due date. A plain invoice has no reason to carry a diagnosis. When a client wants out-of-network reimbursement, you give them a superbill instead, which adds the service and diagnosis codes the insurer asks for. And before care starts, a self-pay client is entitled to a good faith estimate of expected charges under 45 CFR 149.610. Templates for all of it are below.
This isn't legal or tax advice. The rules below are federal (the No Surprises Act regulations and HIPAA) as of November 2026; your state, your licensing board and your payer contracts may add their own. For what AI employees do in a therapy office overall, see AI Tools for Therapists: Office, Not Therapy.
What a therapy invoice template should include
No federal rule prescribes the layout of a private-pay therapy invoice. What the professional codes ask for is clarity up front and accuracy afterwards. The APA Ethics Code for psychologists says that "as early as is feasible" psychologists and clients "reach an agreement specifying compensation and billing arrangements" (6.04(a)), and that reports to payors accurately state "the nature of the service provided", the fees and, where applicable, the diagnosis (6.06).
A therapist invoice template that works for clients, for your bookkeeping and for a later superbill covers seven points:
- Practice header. Practice name, your name and license or credential, address, phone, email. Your NPI and tax ID if you have them; the superbill needs them anyway.
- Client. Name and billing address of the client, or of the person responsible for payment if the client has agreed to that.
- Invoice number and date. One number per invoice, never reused, plus the statement period.
- One line per session. Date, service in plain words ("individual session, 50 minutes", "couples session, video"), fee.
- Payments and adjustments. Payments received with date and method, and any sliding-scale or package discount you agreed in writing.
- Balance and terms. Amount due, due date, how to pay.
- Reimbursement note. "A superbill is available on request."
Therapy invoice vs. superbill
SimplePractice describes a superbill as "a specialized itemized invoice created for out-of-network clients or patients who want to seek reimbursement directly from their health plan". The client, not you, submits it to the insurer.
The federal estimate rules use the same vocabulary: a "diagnosis code" uses "the International Classification of Diseases (ICD) code set", a "service code" uses "the Current Procedural Terminology (CPT)" and related sets (45 CFR 149.610(a)(2)). Which codes fit is a billing question; this article covers the format. Issue the superbill only when the client asks for it, since it moves a diagnosis onto paper the client then sends on.
Good faith estimate for self-pay clients
Since 2022, providers must give uninsured or self-pay clients a good faith estimate of expected charges, "upon request or upon scheduling an item or service" (45 CFR 149.610). "Self-pay" includes insured clients who don't want a claim submitted. The rule in practice:
- Ask two questions at intake. Is the client enrolled in a health plan, and if so, do they want to have a claim submitted?
- Tell every self-pay client that a good faith estimate is available: as a notice on your website and in your office, and orally when scheduling or when cost comes up. Any discussion about cost counts as a request.
- Deliver on time. No later than 1 business day after scheduling if the session is at least 3 business days away; no later than 3 business days if it is at least 10 business days away; no later than 3 business days after a request.
- Recurring sessions. One estimate can cover recurring services if it states the expected scope, "such as timeframes, frequency, and total number", for no more than 12 months.
- Content. Client name and date of birth, the service in plain language, an itemized list, applicable diagnosis and service codes with expected charges, your name, NPI, tax ID and location, and the required disclaimers.
- Keep it in the client's record; copies from the last 6 years go out on request.
If the final bill is "at least $400 more" than the estimate, the client can start patient-provider dispute resolution (45 CFR 149.620). Part D of the template lists the required elements.
Privacy: what the invoice shows
An invoice from a therapist shows that a person is in therapy. If you're a HIPAA covered entity, typically because you bill insurance electronically, the minimum necessary standard applies whenever you use or disclose protected health information: you "must make reasonable efforts to limit" it "to the minimum necessary to accomplish the intended purpose" (45 CFR 164.502(b)). Disclosures to the client themselves are exempt; an invoice sent to a partner who pays or to a billing service is not. Whether HIPAA applies to you is covered in AI Tools for Therapists. Cash-only or not, three habits keep invoices lean:
- No diagnosis on the invoice. It goes on the superbill, and only on request.
- Plain service lines. "Individual session, 50 minutes" is enough; no treatment approach, no clinical notes.
- A neutral cover email. Invoice number, date and amount in the subject and body, nothing clinical. Send the invoice itself through your practice software's client portal or secure messaging.
Template: therapy invoice, superbill fields, cover email, estimate
Replace every bracket. Amounts are placeholders; nothing here suggests codes or fees.
PART A: THERAPY INVOICE
[Practice name]
[Your name], [license/credential], License No. [number]
[Street, City, State ZIP] [Phone] [Email]
NPI: [number] Tax ID: [EIN] (optional on an invoice)
Bill to: [Client name or responsible party]
[Street, City, State ZIP]
Invoice No. [sequential number] Invoice date [MM/DD/YYYY]
Statement period [MM/DD] to [MM/DD/YYYY]
Date Service Fee
[MM/DD] [Individual session, 50 minutes] $[0.00]
[MM/DD] [Individual session, video] $[0.00]
Total charges $[0.00]
Payment received [MM/DD], [method] -$[0.00]
Agreed discount [sliding scale / package] -$[0.00]
Balance due by [MM/DD/YYYY] $[0.00]
Pay by [method/link]. Questions about this invoice:
[phone], [hours]. A superbill for out-of-network
reimbursement is available on request.
PART B: SUPERBILL FIELDS (add only on the client's request)
Provider NPI [number] Tax ID [EIN] License [state, number]
Place of service [office / telehealth]
Client date of birth [MM/DD/YYYY]
Diagnosis code(s) (ICD-10) [code]
Per session: date, service code (CPT) [code], fee, amount paid
Statement: "Client paid in full; for out-of-network
reimbursement."
[Signature, date]
PART C: COVER EMAIL (no clinical details)
Subject: Invoice [number] from [practice name]
Hi [first name],
attached is invoice [number] dated [date] for $[amount],
due [date]. You can pay by [method]. If anything on it
doesn't look right, reply or call [phone].
[Your name], [practice name]
PART D: GOOD FAITH ESTIMATE (self-pay, required elements)
Client name and date of birth: [ ]
Service in plain language and scheduled date(s): [ ]
Recurring scope: [frequency], [number of sessions],
[time frame, max. 12 months]
Itemized list: [service], [diagnosis code], [service code],
expected charge $[ ] per session, total $[ ]
Provider: [name], NPI [ ], Tax ID [ ], [state, location]
Items needing separate scheduling: [ ] with the required
disclaimer that separate estimates will be issued
Disclaimers: there may be additional recommended services
not reflected here; this is only an estimate and actual
charges may differ; you may start patient-provider dispute
resolution if billed charges are substantially in excess of
this estimate [where to find instructions], and doing so
will not affect the quality of your care; this estimate is
not a contract and does not require you to obtain these
services from us.
Wording for reminders on unpaid invoices is in Business Email Templates That Work. Late cancellation fees go on a separate line or invoice; the policy behind them is in Therapy Cancellation Policy: What to Write.
Where AI employees fit
I don't have an AI case from a therapy practice yet. Client invoices and superbills show that someone is in treatment, so they're created in your practice software and stay there; what that software needs is in Therapy Notes Software for Psychotherapists. Three of my AI employees still fit around it; in a practice, each task is a new workflow you describe to them.
Peter, expense receipts. Peter has been running in my business since August 19, 2026. He screens receipts, matches the credit card statement line by line and reports what doesn't add up; he doesn't book entries. In a practice he gets expense receipts only: rent, software, supervision, training. Matching client payments against open invoices stays in your practice software, because a bank feed full of client names shows who is in treatment.
Sonja, cover and reminder emails. Sonja has been running in my business since July 17, 2026. From voice examples, fact sources, required elements and taboos she writes repeatable business emails without inventing facts, and nothing goes out until it's explicitly approved. For a practice she drafts the cover email and a payment reminder as templates with placeholders, no client details; you fill them in your practice software.
Anton, invoices without clients on them. Anton runs in my own business. Once a client says yes, he creates the contact, offer and invoice as a draft in Lexware Office, or through a self-built adapter for your own tool; you review and send. In a practice that fits supervision, workshops and talks, where no client appears on the invoice.
If a client doesn't pay: my own dunning is not automated. How reminders and notices are built is in Automate Payment Reminders and Dunning. If you're just opening, the office setup is in How to Start a Private Practice: Office Setup.
If your practice is in Germany
German psychotherapists bill private patients under the GOP, which points to the physicians' fee schedule GOÄ. Under § 12 GOÄ the invoice must list the date of each service, the number and description including any minimum duration, the amount and the multiplier, with a reason per service above 2.3 times the base fee; only then is the fee due. Treatment is VAT-exempt under § 4 Nr. 14a UStG, and the invoice notes the exemption. Self-pay patients get a written cost estimate before treatment (§ 630c(3) BGB). Matching patient payments with an AI employee only works through a protected route such as my data lock: before a request goes to Claude, it replaces names and other details that point to a person with placeholders, and puts the real names back into the answer. It is ready for use and already in operation, and I set it up for each practice individually. Pseudonymised data is still personal data under the GDPR. For a naturopath's practice, see Naturopath Practice Software: How to Choose; German invoice rules in general are in German Small Business Invoices: The Rules, Free German Invoice Template and German E-Invoicing: Dates and Exemptions. How exempt and taxable income are kept apart over the year is in Bookkeeping for Therapists: What AI Prepares.
Frequently asked questions
What should a therapy invoice include?
Practice details and credentials, the client, an invoice number and date, date, service and fee per session, payments and the balance due. NPI and tax ID are optional here and needed on a superbill.
Is a superbill the same as an invoice?
No. An invoice asks for payment. A superbill is an itemized statement with service and diagnosis codes that the client submits to their insurer for out-of-network reimbursement.
Do I need a good faith estimate for every self-pay client?
Yes, on scheduling or on request, and you tell each of them that it's available (45 CFR 149.610). One estimate can cover recurring sessions for up to 12 months.
Should a diagnosis go on a therapy invoice?
Not on a plain invoice. It belongs on the superbill the client requests, and on the good faith estimate where applicable.
How to keep going
Check your last invoice against the seven points above. Then set up Part A in your practice software, keep Part B for clients who ask, and send self-pay clients Part D before the first session. For your own practice, let's look at it together. Other industries are collected on AI by Industry.
