When you sell in markets, exchange conversions might cause your product prices and shipping rates to have inconsistent price endings. You can round your product prices and shipping rates to avoid inconsistent price endings after the currency conversion process. Your converted prices change based on the foreign exchange rate, but applying rounding rules keeps your prices and shipping rates stable.
Rounding rules don't apply to gift cards.
You can activate rounding rules, and then preview converted prices from your Markets page.
You can view a breakdown of how each product price is calculated for each market.
From your Shopify admin, go to Settings > Markets.
In the Other markets section, click Preferences.
Select the Price rounding check box.
When rounding rules are activated, prices are automatically rounded to the most common denominator for each currency. You can't customize your rounding rules to anything different from these defaults.