Various limits apply to most tax deductions, and one type of limit is a “floor,” which means expenses are deductible only if they exceed that floor (typically a specific percentage of your income). One example is the medical expense deduction.
Because it can be difficult to exceed the floor, a common strategy is to “bunch” deductible medical expenses into a particular year where possible. If tax reform legislation is signed into law, it might be especially beneficial to bunch deductible medical expenses into 2017.
The deduction
Medical expenses that aren’t reimbursable by insurance or paid through a tax-advantaged account (such as a Health Savings Account or Flexible Spending Account) may be deductible — but only to the extent that they exceed 10% of your adjusted gross income. The 10% floor applies for both regular tax and alternative minimum tax (AMT) purposes.
Beginning in 2017, even taxpayers age 65 and older are subject to the 10% floor. Previously, they generally enjoyed a 7.5% floor, except for AMT purposes, where they were also subject to the 10% floor.
Benefits of bunching
By bunching nonurgent medical procedures and other controllable expenses into alternating years, you may increase your ability to exceed the applicable floor. Controllable expenses might include prescription drugs, eyeglasses and contact lenses, hearing aids, dental work, and elective surgery.
Normally, if it’s looking like you’re close to exceeding the floor in the current year, it’s tax-smart to consider accelerating controllable expenses into the current year. But if you’re far from exceeding the floor, the traditional strategy is, to the extent possible (without harming your or your family’s health), to put off medical expenses until the next year, in case you have enough expenses in that year to exceed the floor.
However, in 2017, sticking to these traditional strategies might not make sense.