There are several differences between wire transfers and ACH transfers that will help you identify if you are sending a wire transfer or an ACH transfer. Below is a list:
Cost: a wire transfer will typically cost between $25-$30. This fee is charged to you by your bank. ACH transfers are usually free or $5-$10 if you ask the bank to speed up delivery. If the transfer is not going to cost you $25-$30 you are not sending us a wire transfer and the funds will not be credited to your account.
Notes/Comment Field: wire transfers include a place where you can put a note or comment to the recipient. This is where you input the reference number we provide you upon creation of your deposit notification in your Kraken account. If you do not have a place to input this reference number you are not sending a wire transfer.
Speed: wire transfers are always notated same day transfers. This does not mean that your funds will always be credited to your Kraken account the same day. Our partners may need to perform additional due diligence which can delay the settlement of your funds. If your transfer is not specified as a same day transfer you are not sending us a wire transfer.