High Earners Often Miss Deductions Before Year-End Filing

High-income taxpayers frequently forfeit valuable itemized deductions each year, not because they are unaware such benefits exist, but because of timing missteps, statutory limits, and a lack of coordinated financial planning. That is the core finding highlighted in a recent HelloNation article featuring insights from Sal Julian, a tax expert based in Endicott, New York.

The article, published ahead of the traditional year-end tax planning window, identifies several specific areas where high earners commonly lose ground. One of the most significant is the deduction for state and local taxes, known as SALT, which remains capped at $40,000 annually under current law. Taxpayers in states with high income and property tax burdens often exceed that threshold well before all eligible payments are accounted for, meaning a portion of what they pay produces no federal tax benefit at all.

Mortgage interest deductions present another common pitfall. Under existing rules, only interest on the first $750,000 of qualifying mortgage debt originated after December 31, 2018, is deductible. Homeowners carrying larger balances, particularly those with multiple properties, must prorate the deductible portion, a calculation the article notes is frequently overlooked or miscalculated.

Charitable giving strategies also factor prominently into the analysis. Donating appreciated stock instead of cash allows filers to claim the full fair market value of the asset while avoiding capital gains recognition on its appreciation. Structuring donations through a donor-advised fund can further improve efficiency by allowing contributions in high-income years while spreading distributions to charities over a longer period. The article also points to “deduction stacking,” a technique in which taxpayers concentrate charitable and other deductible expenses into alternating years to consistently exceed the standard deduction threshold, rather than falling short of it annually.

Retirement and health-related accounts round out the list of frequently underused tools. Traditional 401(k) contributions remain deductible regardless of income level, while health savings accounts offer a combination of deductible contributions, tax-free growth, and tax-free qualified withdrawals. For 2026, individuals enrolled in qualifying high-deductible health plans can contribute up to $4,400, or $8,750 for family coverage, with an additional $1,000 catch-up contribution available to those over age 55.

These findings reflect broader patterns tax professionals have observed since the 2017 overhaul of federal tax law significantly raised the standard deduction while simultaneously capping or limiting several itemized categories. That shift altered long-standing assumptions among higher earners, many of whom had previously itemized deductions as a matter of course without evaluating whether doing so still produced a measurable benefit each year.

Financial advisors and accountants have increasingly emphasized proactive, multi-year planning as a response to these structural changes. Strategies such as timing charitable contributions, monitoring mortgage debt thresholds, and maximizing contributions to tax-advantaged accounts require decisions made well before year-end rather than during tax preparation season. Industry observers note that coordination between financial advisors, accountants, and estate planners has become more important as tax codes grow increasingly complex and deduction limits remain fixed despite inflation in income and property values.

The article frames these gaps as addressable, provided taxpayers begin reviewing their financial decisions with tax consequences in mind well before December 31, rather than waiting until filing season to assess what deductions may have been missed.

According to a report from PR Newswire, the insights were compiled as part of HelloNation’s ongoing coverage of financial and community topics nationwide.