Buy a Steam Wallet gift card or digital Steam gift card from an authorized retailer
If it is a physical card, scratch off the code area carefully
If it is a digital card, copy the redemption code from the email or receipt
Open Steam and sign in to your account
Go to Steam Support or the Redeem a Steam Gift Card or Wallet Code page
Enter the gift card code
Confirm the redemption
If you want to send a gift card to someone else, buy it as a gift from Steam or a trusted retailer
Enter the recipient’s email address if purchasing a digital gift card
Select the amount and complete payment
Make sure the recipient’s country and currency are supported
Send the code or gift link to the recipient securely
Tell the recipient to redeem the code in their Steam account
Keep the purchase receipt until the card is redeemed