For Psychologists and Therapists: Weekly Sessions, Monthly Invoices, Zero Drama

A therapy practice runs on a quiet, predictable rhythm. The same client at the same time each week, for months or years. Twenty-five to thirty active clients on the books. The therapy work is structured; the billing work is anything but — because every Friday afternoon, or every first of the month, it lands as a single block of paperwork that has nothing to do with what the practice is actually for.

It doesn’t need to.

Meet Milda

Milda runs a small psychotherapy practice in Vilnius — twenty-eight active clients, mostly weekly sessions, a few bi-weekly. Her week is Monday to Thursday with clients, Fridays for notes, supervision, and the part of the job nobody trained her for: invoicing.

Half her clients pay session by session at the end of each appointment. The other half — most of the long-term ones — want one invoice at month-end with all the sessions listed, sometimes for insurance reimbursement, sometimes just because that’s how their household budget works.

A single month is around 110 sessions. At a flat €60 per session, the cash maths is simple. The paperwork maths used to take her two-and-a-half hours every first weekend.

The Real Billing Reality

The shape of the work has a few quiet teeth:

• Confidentiality constraints the invoice line. Most clients are fine with “Therapy session” on the line; some specifically don’t want even that — they want “Consultation” or “Professional services”. The PDF can never include diagnosis codes, session notes, or anything beyond date and amount.
• Reschedules and cancellations have policies. A late-cancellation fee, a no-show fee — these need to land on the invoice as their own line, with their own language. Forgetting to charge them is one kind of problem; charging twice is a much bigger one.
• Payment terms matter quietly. Some clients pay the moment the invoice arrives. Some pay on the 15th of the following month because that’s when their salary lands. A clear “due in 14 days” line, written once in the template, prevents the awkward conversation when a client thinks payment is at-leisure.
• Insurance clients want a structured invoice. Many private insurers in the EU reimburse psychotherapy, but only against a properly formatted invoice with the right registration codes. The format itself is the work.

110 sessions a month, 28 monthly invoices, two-and-a-half hours of work for €0 of new revenue.

How Haiku Fits a Therapy Practice

Four pieces of Haiku do the work:

• Bulk-create monthly invoices from your calendar — every session on Google Calendar; at month-end, point Haiku at the previous month, group by client name, and one invoice per client falls out with each session dated and listed. Confidential line text is set once in the template. Bulk-create invoices from Google Calendar.
• One-off invoice in under a minute for a new client’s first session, a one-time consultation, or a late-cancellation fee outside the regular flow. How to create an invoice.
• Send from your own Gmail so the client’s inbox sees “Milda Psychotherapy” not no-reply, and your sent folder is the audit trail if a client says months later “I never got the March invoice.” Set up Gmail for invoice sending.
• Set payment terms once — “due 14 days from issue”, or whatever your policy is — and the line shows on every invoice, so the expectation is on the page from the moment it lands. Set due dates and payment terms.

Whether the practice is psychology, psychotherapy, couples counselling, or coaching-adjacent therapy — the workflow is the same: sessions in the calendar, one invoice per client at month-end, sent from your own address, with payment expectations on the page from line one.

When It’s Not the Right Fit

If you work exclusively through a clinic that bills clients on your behalf, you don’t need this — but the moment you take on a private client, even one, the billing comes back to you.

Getting Started in 3 Steps

1. Sign up free at haiku.lt and connect Google — 500 invoices in the free plan covers more than a year of a typical practice.
2. Set the line text and payment terms once — “Therapy session” or whatever wording suits, plus your due-in-X-days. Every invoice from now on inherits both.
3. At month-end, run the Calendar wizard, grouping by client name. First month is fifteen minutes; from the second, five.

From Friday-Night Paperwork to a Monday-Morning Practice

Sign up free at haiku.lt and try it on this month’s sessions.

Questions? Email dalius.dobravolskas@gmail.com.