When you make a purchase from one of your linked accounts, Bitstack rounds it up to the nearest euro and automatically invests the spare change in bitcoin.

For example, if you buy a coffee for €2.60, Bitstack will round this purchase up to €3.00 and invest €0.40 in bitcoin.

Bitstack calculates the sum of the roundups made on all your linked accounts throughout the week, and debits you once a week for the total of your roundups. The total of your Roundups will be debited on the payment method you will have selected. You can view your Roundups directly in the app under Round-Ups, as well as details of your transfers by tapping on the Activity tab.

Note: If the total amount of your roundups for the week is less than €1.00, Bitstack will debit you a minimum of €1.00.

Instead of trying to "time the market", many investors use a recurring purchase strategy (or "dollar-cost averaging" or "DCA") to reduce the impact of market volatility by investing a smaller amount in an asset at regular intervals.

Round-up is calculated by considering all debits on your bank account:

You can change the card from which your next round-up will be deducted at any time. It may be a different card from the one used to calculate these round-ups.

To do this :

For privacy reasons, we do not keep your rounding history for previous weeks.

However, you can view your rounding history for the current week :

If the round-ups payment fails, another attempt will not be made automatically, but you can try again manually:

If the Retry button doesn't appear, simply make a one-time investment of the same amount.

When you link a joint account to Bitstack, we calculate rounding on all expenses visible on your bank statement, regardless of the card used.
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The expenses of both spouses will then be taken into account when calculating the rounding for the week, and deducted in one go from the card of your choice every Sunday evening.

Currently, round-ups on Bitstack only works with euro accounts. If you link an account in Swiss francs or dollars, for example, we won't be able to include your transactions in the weekly rounding calculation.
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If your bank account is a multi-currency account, we will only take into account your euro transactions.

Bitstack applies the same fees to Roundup as to one-time and recurring card investments.

Round-up fees are calculated on the total amount of your round-up for the week, when they are debited each Sunday evening.
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For example, if your various Round-up transactions throughout the week total €26, the fee will be calculated only once on this overall amount of €26, and not on each transaction individually.