With just days left in the year, tax policy is shifting from debate to implementation. Federal agencies are rolling out guidance tied to the One Big Beautiful Bill Act, lawmakers are openly rethinking how health coverage subsidies should work in 2026, and the real-world consequences of tariff policy are becoming increasingly visible—not just in the U.S., but globally.

For advisors, this week marks a transition point: clients are no longer asking what might change, but what already applies to their 2025 returns and 2026 planning.

Here’s what matters this week:

Let’s take a closer look.

1. IRS Releases HSA Expansion Details Under Trump’s “Big Beautiful Bill”

CNBC

The Treasury Department and IRS released long-awaited guidance expanding Health Savings Account (HSA) eligibility under the One Big Beautiful Bill Act—significantly broadening access beginning in 2026.

What’s new under the guidance:

The guidance arrives amid continued uncertainty around enhanced ACA subsidies, which are scheduled to expire after 2025 unless Congress intervenes. A GOP proposal released this week would allow subsidies to lapse while redirecting funds into HSAs.

Why it matters for advisors:

Expanded HSA eligibility strengthens HSAs as a long-term tax-advantaged planning tool—especially for clients facing rising premiums or subsidy changes in 2026.

Read the full CNBC story

2. What to Know Now About Filing 2025 Taxes Under the One Big Beautiful Bill Act

CNN

CNN published a comprehensive breakdown of how OBBBA will affect 2025 tax returns, highlighting just how different the upcoming filing season will be.

Notable provisions now in effect:

Several provisions require new IRS forms, including Schedule 1-A and Form 4547.

Why it matters for advisors:

Many taxpayers may misunderstand how these provisions work based on political messaging. Advisors will need to guide clients through eligibility thresholds, documentation requirements, and new forms.

Read the full CNN report

3. Trump’s Tariffs Are Reshaping the Global Economy — Not Just U.S. Prices

CNN

New CNN analysis shows that Trump’s tariff policies are now contributing to measurable economic strain across multiple U.S. trading partners.

Examples highlighted include:

These global disruptions are feeding back into supply chains and long-term pricing dynamics affecting U.S. businesses and consumers.

Why it matters for advisors:

Clients with international exposure may face increased volatility in costs, earnings, and investment decisions heading into 2026.

Read the full CNN analysis

4. Markets Balance AI Optimism, Slowing Jobs, and 2026 Fiscal Stimulus

Forbes

Despite tariff headwinds and softening labor data, broader economic indicators remain mixed.

Highlights include:

Markets appear to be pricing in slower growth rather than an imminent recession.

Why it matters for advisors:

Clients may feel economic anxiety despite relatively strong fundamentals. Advisors can help reframe short-term concerns within longer-term planning strategies.

Read the full Forbes analysis

Your Takeaway This Week

As 2025 comes to a close, tax policy is moving quickly from theory to reality:

For advisors, the final weeks of the year present an opportunity to reset expectations, review documentation needs, and proactively guide clients into a more complex 2026 tax environment.

Harness supports advisors navigating these transitions—helping translate policy changes into clear, actionable guidance.

Need support heading into filing season?

Schedule an introduction today.

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