Need To Refile W4's, Help!

Hi tax experts! Thanks for hosting this event!

My husband and I filed jointly last year and owed about $1600 federal. We each have one income.

Since then, he has received a substantial salary raise and it is clear we need to refile W4's with each of our companies. We make about the same salary.

We cannot figure out how much extra to withhold to make sure we do not owe again next year. Actually, we are quite stumped on the entire W4 document to be honest!

Would appreciate any insight you can provide since it seems time of the essence. Thank you!