two alternatives to playing with the exemptions on your paycheck:
1) leave the exemptions / married as is and request additional withholdings of $3000 / the number of paycheck in a year (it's on the W-4 form)
2) use the coupons in turbo tax to send Uncle Sam a check for $750 on each of the 4 due dates over the course of the next year.
out of curiosity, are you in CA or the Northeast where the 'SALT' (state and local taxes) limit of $10,000 were expected to have the biggest impact?
