How to fix currency mismatch error in Stripe

1// CORRECT — explicit currency
2const paymentIntent = await stripe.paymentIntents.create({
3  amount: 2000,       // $20.00 in cents
4  currency: 'usd',   // Always specify!
5  automatic_payment_methods: { enabled: true },
6});
7
8// WRONG — missing currency leads to account default
9const paymentIntent = await stripe.paymentIntents.create({
10  amount: 2000,
11  // currency not specified — uses account default, which may not be what you want
12});

1async function createPaymentForPrice(priceId) {
2  // Fetch the price to get its currency and unit_amount
3  const price = await stripe.prices.retrieve(priceId);
4
5  const paymentIntent = await stripe.paymentIntents.create({
6    amount: price.unit_amount,     // Use the price's amount
7    currency: price.currency,      // Use the price's currency
8    metadata: { price_id: priceId },
9    automatic_payment_methods: { enabled: true },
10  });
11
12  return paymentIntent;
13}

1// Create prices for different currencies on the same product
2const usdPrice = await stripe.prices.create({
3  product: 'prod_ABC123',
4  unit_amount: 2000,    // $20.00
5  currency: 'usd',
6});
7
8const eurPrice = await stripe.prices.create({
9  product: 'prod_ABC123',
10  unit_amount: 1800,    // 18.00 EUR
11  currency: 'eur',
12});
13
14// Select the right price based on customer's currency
15function getPriceForCurrency(currency) {
16  const priceMap = {
17    usd: 'price_usd_id',
18    eur: 'price_eur_id',
19  };
20  return priceMap[currency] || priceMap.usd;
21}