Waiting on bank transfers
Clients mean to pay, then the invoice slips down their inbox and the transfer never happens.
Invoicing & payments
Send invoices from the same portal your clients use for their forms and files. They pay by card in a couple of clicks, and the money goes to your own Stripe account. Included in the Premium plan.
14-day free trial · No credit card · Clients are always free
Clients mean to pay, then the invoice slips down their inbox and the transfer never happens.
Every month someone recreates the same invoice and sends it again.
Chasing a client for money is the email nobody on your team wants to write.
How it works
Link your own Stripe account through Stripe Connect, so client payments go to you.
Add line items, tax and your saved services, with your logo and business details on every invoice.
Clients pay by card in their portal. Automatic reminders follow up on anything still due.
Billing that fits client work
Invoices
Line items, tax and saved services make every invoice quick to put together. Save it as a draft, send it or print it.
Recurring billing
Bill weekly, monthly or yearly. Pause, resume or cancel a recurring invoice whenever the engagement changes.
Client payments
Clients pay in their portal, can save a card for future invoices and see their full invoice history.
Reminders
Automatic payment reminders go out on your schedule, in words you can edit, so you don’t have to write the email.
Your Stripe account
Portalstack connects to your own Stripe account through Stripe Connect. Your clients pay from the portal they already know, without a separate payment page to hunt for.
Interactive proposals clients approve online
Send any PDF for signature in minutes
Forms, ID checks and tasks in one flow
Request files and let reminders do the chasing
A branded home for every client
Folders per client, with control over every file
NDA-gated rooms for deals and due diligence
FAQ
Get started
Start a free trial, connect Stripe and invoice a test client in minutes.
Start free trial14-day free trial · No credit card · Clients are always free