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Stackd
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Features

Three things, done properly.

Stackd doesn’t do payroll, inventory or double-entry. It sends invoices, chases them, and gives clients somewhere to pay.

Quick invoices

An invoice in under a minute.

Pick a client and Stackd fills in their address, currency and tax rate. Add lines, press send. Your client gets a tidy PDF and a pay button in the same email.

  • VAT and sales tax worked out per line, rounded the way HMRC expects
  • Recurring invoices for retainers, sent on the day you choose
  • 30 currencies, with the exchange rate fixed and printed when you send
  • Duplicate last month's invoice with the dates already moved on
Automatic reminders

Chasing, without the awkward bit.

Set a schedule once. Polite reminders go out before, on and after the due date, from your own name, and stop the moment the invoice is paid.

  • Default schedule: 3 days before, on the day, 7 and 14 days after
  • Edit the wording, or pause reminders for one client
  • Optional late fee, fixed or percentage, added only after the date you set
  • Replies land in your inbox, not ours
Client portal

One link. Every invoice.

Each client gets a private page with their open invoices, receipts and quotes. They pay, download PDFs and update their own billing details.

  • Magic-link sign-in for clients, no password to forget
  • Pay by card, PayPal or bank transfer from the same page
  • Studio plan: your logo, colours and your own domain
  • You see when a client has opened an invoice

Integrations

Plays nicely with the tools you already pay for.

Stripe

Cards, Apple Pay and Google Pay. Connect in two clicks; payouts follow your Stripe schedule.

PayPal

For clients who live in PayPal. Paid invoices are matched automatically.

Wise

Local bank transfers in 30 currencies, at the mid-market rate.

Security

Loud design. Boring security.

It’s your income, so here is exactly what we do with it, in plain words.

  • We never see card numbers

    Payments run on Stripe, PayPal or Wise. Card and bank details go straight to them; Stackd only receives a paid or failed status.

  • Encrypted, in the EU

    TLS 1.2+ in transit, AES-256 at rest, hosted in Frankfurt. Two-factor sign-in is available on every plan and required for Studio admins.

  • Your data leaves when you do

    Export invoices as PDF, payments and lines as CSV, or the whole account as JSON. No support ticket, no waiting.

  • Backups you don't think about

    Encrypted backups every hour, kept for 30 days in a separate region. We publish incidents on our status page within one hour.

See it on your own invoices.

Free for 14 days, no card needed. Your first invoice can go out in the next five minutes.

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