Guide Wealth Management
Pillar IV · Tax Planning

Maximizing what you keep.

Tax preparation is looking in the rearview mirror to see what you owed last year. Tax planning is looking through the windshield to lower your lifetime tax bill. The two are not the same profession.

The single most consequential planning shift of the last decade was the One Big Beautiful Bill Act (OBBBA), signed in July 2025. It made individual tax rates permanent and raised the estate tax exemption beginning in 2026. The Roth conversion case has shifted from beating a sunset to beating your own future tax brackets and Medicare cliffs.

The 2026 tax bracket map

2026 federal income tax brackets · per IRS Procedure 2025-32
RateSingle FilerMarried Filing Jointly
10%Up to ~$12,000Up to ~$24,000
12%~$12,000 – $48,475~$24,000 – $96,950
22%~$48,475 – $103,350~$96,950 – $206,700
24%~$103,350 – $197,300~$206,700 – $394,600
32%Above $197,300Above $394,600

Highlighted rows indicate brackets where strategic Roth activity often occurs.

The strategic window

The highest-leverage tax planning often happens in the gap between retirement and age 73 (RMDs). During these years, ordinary income drops to historic lows, creating a "valley" for low-bracket Roth conversions.

Fig. 4.1 · The Roth conversion window
THE WINDOW Retirement → before RMDs RMD YEARS
"Tax preparation is looking in the rearview mirror. Tax planning is looking through the windshield."

Asset location: different outcomes

Sophisticated investors think about asset location: where to own specific assets to minimize tax drag.

Asset location: matching investment to account
Account TypeBest for...Why
TaxableMunis, individual stocksFavorable cap-gains rates
Traditional IRABonds, REITsOrdinary income is sheltered
Roth IRAHighest-growth assetsMaximum growth is never taxed

Tactical moves like tax-loss harvesting (IRC § 1091) and business succession timing can add meaningful after-tax returns over decades.

Annual tax planning checklist · Q4

Critical moves to complete before December 31.

  • Project taxable income before year-end.
  • Identify Roth conversion bracket headroom.
  • Make Qualified Charitable Distributions (QCDs) if over 70½.
  • Tax-loss harvest deliberately, avoiding wash-sales.
  • Max out HSA, 401(k), and IRA contributions.

Tax planning questions answered

What is a "tax torpedo"?

As provisional income rises, Social Security benefits become taxable in a range that creates effective marginal rates of 40% or higher. Avoiding this is a primary goal of pre-retirement Roth planning.

What is IRMAA and why do retirees care?

IRMAA is a Medicare premium surcharge cliff. One dollar over the income threshold can cost thousands in premiums. We model conversion amounts specifically to avoid these cliffs.

Primary sources
  1. IRS Revenue Procedure 2025-32.
  2. IRS Publication 550.
  3. One Big Beautiful Bill Act (OBBBA), 2025.
  4. 26 U.S.C. § 1091 (Wash sales).
  5. 26 U.S.C. § 408(d)(8) (QCDs).

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