On Substack, you have the flexibility to set the default currency on how you'd like subscribers to pay.
To change the currency of paid subscribers on your publication, follow these steps:
1. Head to your publication's Settings page and click on Payments in the left navigation bar. Scroll to your subscription plans.
2. Click on the currency drop-down menu next to a plan and select your preferred currency.
3. Once you've selected your desired currency, select "Save".
Moving forward, your new subscribers will see the plan pricing in your selected currency.
Tip: If you'd like readers to see subscription plan prices in their local currency, follow the steps here to enable localized pricing.