Client’s income is in phaseout for the deductibility of traditional IRA contribution. If they make a $4,000 contribution to a Roth and a $2,000 contribution to a Traditional IRA, how does the deductibility work? For example, if they are halfway through the phaseout can they only deduct $1,000 of the Traditional IRA contribution? Or can they deduct the full $2,000 since they are only halfway through the phaseout and $2,000 is less than half of the IRA contribution limit?

Is there an IRS worksheet to walk through this?

Thank you!