What if i put in the wrong routing number

I looked it up online and i got a routing number but not sure if it will work i also put my bank card number. Will it still work?

After you file

No it will not work. You need your bank ACCOUNT number. This is easy with a check, but if you don't have an empty check (you should have at least one for these occasions), it's easier to just have it mailed to you.