Tax season just kicked off, and if you're filing the same way you did last year, you might be leaving money on the table—or worse, setting yourself up for an unexpected bill.

2026 brought some significant changes to the tax code. Here's what actually matters for your wallet.

1. Standard Deduction Increased (Again)

Good news first. The standard deduction bumped up to:

• $15,000 for single filers (up from $14,600)
• $30,000 for married filing jointly (up from $29,200)

This means slightly less taxable income without doing anything. But don't get too excited—this is mostly keeping pace with inflation.

2. New Energy Credit Limits

If you installed solar panels, a heat pump, or made energy-efficient upgrades in 2025, pay attention. The residential clean energy credit now has annual caps:

• Solar: Up to $2,000 per year (down from uncapped)
• Heat pumps: $2,000 maximum
• Windows/insulation: $1,200 combined

Plan your upgrades accordingly if you're thinking multi-year projects.

3. Side Hustle Reporting Got Stricter

The $600 threshold for 1099-K reporting is now fully in effect. If you sold anything on eBay, Etsy, or even Venmo'd goods over that amount, expect a tax form.

Pro tip: Keep records of what you originally paid for items you sold. If you sold grandma's vase for $800 but she bought it for $1,200, you don't owe taxes on that.

4. Student Loan Interest Deduction Expanded

Finally, some relief. The student loan interest deduction income limits increased:

• Single filers: Phase-out starts at $85,000 (was $80,000)
• Joint filers: $170,000 (was $165,000)

If you were just above the old limits, double-check your eligibility.

5. Retirement Contribution Limits Increased

Max out that 401(k) if you can:

• 401(k): $23,500 (up from $23,000)
• IRA: $7,500 (unchanged)
• Catch-up (50+): Additional $7,500

These increases might seem small, but compounded over decades, they matter.

The Bottom Line

Don't just click through TurboTax on autopilot. These changes could mean hundreds or thousands of dollars depending on your situation.

If your tax situation is at all complex, this might be the year to spend an hour with a CPA. The consultation fee often pays for itself.

What tax changes are affecting you most? Share in the comments.