Schmidt's Ireland contract expires after next year's World Cup in Japan and the 53-year-old admits he is still agonising about his decision.
"It's a decision that will probably not be finalised until Sunday, certainly by early next week," said Schmidt.
"But it's a decision that's been a long time coming," added the Ireland coach.
"To be honest I've beaten myself up enough about this decision. I'm probably going to be the most pleased of anyone when it is finally made."