Join the founding 50
52weekly checks a year
2countries at launch
For UK Shopify sellers

Know what you owe. Every single week.

QuarterStack works out the VAT and overseas sales tax on your Shopify orders each week, and helps you move it into your own tax pot.

Join the founding 50 See how it works
Mondayyour weekly figure
£0of your money held by us
UK VAT · this weekExample
£168.24
From 38 UK ordersMove it
SET ASIDE THIS QUARTER 64% £1,073 of £1,676 · on track
Monday email9:00
Move £168.24 and A$738 this week
UK VAT£168.24
AU GSTA$738.00

Three steps. Then it's a habit.

01 · How it works
  1. 01

    Connect your store

    Read-only access to your orders. Takes two minutes.

  2. 02

    See what you owe

    Every Monday: the exact VAT and GST from last week's orders, by country.

  3. 03

    Move it in one tap

    Your bank opens with the amount filled in. Approve it, and it's in your tax pot.

02 · Your tax pot

Earn interest while you save for your tax.

Your tax pot is a separate account of your own, with its own sort code and account number. QuarterStack never holds your money.

Interest depends on your bank and account. QuarterStack doesn't pay interest.

Business account Your tax pot
Automatic moves, where your bank supports them Approve once, and the right amount moves each week. Skip a week or stop any time.
03 · Founding 50

Free until launch. Then 50% off for a year.

Launching January 2027, for UK Shopify sellers.

Questions

Do you hold my money?

No. It moves from your business account to your own tax pot, and stays in your name.

Is this tax advice?

No. The figures are estimates from your orders. You or your accountant file the return.

Which taxes?

UK VAT and Australian GST at launch, with more countries to follow.

Which banks?

Any UK account with its own sort code and account number can be your tax pot.