Billing and Invoicing Software for UK Therapists

Why therapists hate invoicing

At the end of every month, the same ritual: open your diary, work out which clients attended, create invoices one by one, email them out, then wait. A week later, chase the ones who haven't paid. Another week, chase again. Meanwhile, receipts from CPD courses, room hire and insurance premiums pile up in a drawer — or worse, in your email — until January, when you try to reconstruct a year's expenses for your self-assessment return.

Running a private practice means running a small business — and invoicing is the part most therapists dread. It's also the part you can lose hours of evenings and weekends to.

Sessionly builds invoicing into the same practice management platform where you already keep your calendar and client records. Your diary creates the invoices. Reminders chase the payments. Your finance page categorises everything for HMRC. And at tax time, you export a CSV.

Reminders that work in the background

Configure two reminder points for your invoices — both optional, both adjustable. Send a polite reminder a configurable number of days before the due date, and a follow-up a configurable number of days after if the invoice is still unpaid. Set the timing that works for your practice and let Sessionly handle the rest.

No more composing awkward “hi, just checking...” emails. No more scanning your invoice list every Monday morning to see who hasn't paid. If you prefer to handle reminders manually, both can be turned off entirely.

HMRC compatible accounting for UK therapists

Sessionly's finance page splits your income (from paid invoices) and expenses with running totals. Log each expense against a UK self-assessment category as you go, not in a panic in January. Upload receipt images directly against each expense entry so everything is in one place.

When your accountant asks for your figures, export everything as a single CSV. Income from invoices, expenses by category, receipt references — ready for self-assessment. Your tax return becomes a CSV export, not a shoebox.

If you use Xero or FreeAgent, Sessionly integrates directly. Connect your account once, and invoices raised in Sessionly are pushed as invoices into Xero or FreeAgent automatically — with the client contact created on first push. Paid status is pulled back into Sessionly on a schedule, so an invoice marked paid in Xero or FreeAgent shows as paid in Sessionly too, with no manual reconciliation. If you don't use either, the CSV export is designed to be straightforward to import into any accounting tool or hand to your accountant.

Either way, Sessionly covers the day-to-day: invoices, expenses, receipts and HMRC categories in one place. For a fuller walk-through, see accounting software for therapists for how Sessionly organises Self Assessment records and fits alongside Making Tax Digital.

For therapy agencies: reconcile therapist invoices against session data

In a typical agency setup, the agency invoices the client at the agency rate, and therapists invoice the agency separately based on their own arrangement — often a per-session rate agreed between the therapist and the agency. At the end of the month, the therapist submits an invoice (“I saw 12 clients this month, please pay £600”) and the agency needs to verify that against what actually happened.

Sessionly's Billing page gives agency owners a clear view of each therapist's session activity — per client, per date. When a therapist submits their monthly invoice, you can manually reconcile session counts, dates, and clients against what Sessionly recorded, before approving payment. No more “trust without verification” reconciliation in spreadsheets.

To be clear: the Billing page is a reconciliation tool, not a payroll system. Sessionly does not store per-therapist payment rates, calculate what therapists are owed, or generate therapist-to-agency invoices. The financial arrangement between your agency and each therapist stays where it belongs — between you and them.