Can I add $1 to Steam?
Every transaction/money transfer from a payment method (debit/credit card, paypal) costs steam/valve a transaction fee. This is why minimum you can add to wallet is 5$. There are ways to add non regular amounts to your wallet BUT that only works with sums over the 5 dollar/euro minimum limit. You cant go below the minimum sum that Steam offers to charge your wallet with. Its hardcoded into the Steam browser/client on the server side and Steam rejects any sums below that threshold.To access it, you can log into the Steam web portal, click on your username in the upper right corner, select Account Details from the menu, and then, within the detailed view, select View purchase history at the top of the screen.Log in to your steam account. Click your profile name in the upper right-hand corner and select account details. Click on +add funds to your steam wallet to select an amount and proceed to checkout.