The figure that needs unpacking is the $47,500 of senior deductions doing the work in Mahaney's example [3]. The deduction that expires after 2028 is capped at $6,000 a person [4], which gets a couple who are both 65 to $12,000 [1]. American Banker's account does not say where the remaining $35,500 comes from [2]. For an advisor putting this in front of a client, that is the first thing to establish, because part of the stack is settled law and part of it is a scheduled lapse.
The second thing to establish is which tax year the example describes. The taxability test as printed asks whether modified adjusted gross income plus half of Social Security benefits stays at or under $32,000, and the joint-filer illustration puts $64,000 of benefits in the tax-free column [2]. Half of $64,000 exhausts that test on its own, before a single IRA dollar is counted. The reading that holds together is the one Mahaney's other advice points to: take the withdrawals in the years before benefits start, and delay the claim to 70, which he recommends anyway because it shrinks later required minimum distributions [7]. In those years there is no benefit to tax and the deduction stack carries the whole withdrawal [3]. That is a sequencing plan wearing a Social Security headline.
Mahaney does not hide the weak joint. He told American Banker the senior deduction is "probably the point that's going to be most brought up and challenged because it is scheduled to go away under law," and expects renewal on the grounds that seniors are the bloc that votes most, and that failing to renew "will come across as if it's raising taxes on the seniors" [6]. That is a forecast about Congress rather than a feature of the code, and it is carrying real weight in the arithmetic. His fallback is candid: without the deduction, clients take smaller withdrawals or pay some tax [5]. Smaller and some are the operative words, and they describe something other than a zero rate.
What survives a lapse is the part of the paper that is not about deductions at all. Mahaney's case is that claiming early leaves the IRA untouched and the balance high, which converts into more lifetime IRA withdrawals rather than fewer [8]. He also argues that because the required beginning date for distributions was pushed later in phases for people born later, the RMDs now reaching disciplined savers are much larger in nominal dollars and force them into higher rates [9]. The asset location advice stands apart again: fixed income in the traditional IRA, equities in the Roth [10]. None of that depends on a provision scheduled to disappear after 2028 [4].
