First Year of Retirement Financial Checklist

Retirement is often treated as a single event — the last day at work. Financially, it is a multi-year transition. The decisions you make in the first 12 months set the trajectory for everything that follows: your tax picture, your Medicare premium, how much Roth conversion room you have, and whether your income structure holds up through a bad sequence of returns. This guide walks through the 10 decisions that matter most, in roughly the order they come up.

1. Medicare enrollment (if you're turning 65 within the next 3 months — or just did)

Medicare's Initial Enrollment Period (IEP) runs for 7 months: the 3 months before the month you turn 65, the month you turn 65, and the 3 months after. Miss it without qualifying employer coverage, and Part B carries a permanent penalty of 10% per 12-month period you were late.¹

In 2026, the standard Part B monthly premium is $202.90. A 2-year late enrollment adds $40.58/month permanently — for the rest of your life on Medicare.

The IRMAA look-back trap in year 1: Your current Medicare premium is based on your MAGI from two years ago. If 2024 was your last full year of high earnings (say, $280,000), you may be paying an IRMAA surcharge on your current Part B bill even though your income has now dropped to $60,000. File SSA Form SSA-44 with documentation of your income-reduction life event (retirement). Medicare will recalculate your premium using your actual current income within a few months.¹

2. Healthcare gap (if you're under 65)

Pre-Medicare retirees need to bridge healthcare costs until Medicare eligibility. In 2026, the main options:

ACA income management: If you're using ACA coverage, manage MAGI carefully. Roth IRA distributions are excluded from ACA MAGI; Traditional IRA withdrawals count. Keeping MAGI below the 400% FPL cliff preserves subsidies. But don't forgo Roth conversions entirely — the year-1 window is too valuable. Model both the subsidy impact and the Roth conversion value before deciding.

3. Social Security: claim now or bridge?

Most financial planners suggest delaying SS to 70 for the higher earner in a couple. Delaying past FRA earns 8% per year in delayed retirement credits, up to age 70. For those born in 1960 or later (FRA = 67), waiting from 67 to 70 increases the benefit by 24%. Break-even is approximately age 82.²

There are real reasons to claim earlier — poor health, longevity uncertainty, immediate income need. But consider: year 1 of retirement is often your lowest-income year for the next 10–15 years. No wages, no RMDs yet, SS not started. That gap is the Roth conversion window. Claiming SS immediately closes that window.

The 2026 SS earnings test: if you do claim before FRA and still earn income, benefits are reduced $1 for every $2 of earnings above $24,480/year (or $1 for every $3 above $65,160 in the year you reach FRA).²

Use the Social Security Break-Even Calculator to model claiming ages 62–70 against your specific benefit estimate.

4. Set up your income withdrawal structure

You now need to create a retirement paycheck from savings. The two main frameworks:

• Systematic withdrawal: Pull a fixed amount monthly or quarterly from your portfolio — typically Traditional IRA first, then taxable, Roth last. Simple but requires discipline on the tax side (IRMAA, SS provisional income).
• Bucket strategy: Divide savings into Bucket 1 (18–24 months in cash/money market), Bucket 2 (bonds/income funds for years 3–8), Bucket 3 (growth/stocks for year 9+). Provides psychological stability through market downturns and natural alignment with asset location principles.

Either way, calculate your net annual draw — what you need from the portfolio after accounting for guaranteed income (SS, pension). Then check your withdrawal rate against sustainable ranges: 4% has an 87–95% historical success rate over 30 years; at longer horizons (35–40 years), 3.5% is more robust.³

Run the Retirement Income Sustainability Calculator to see your depletion projections across conservative, moderate, and growth return scenarios.

5. Quarterly estimated taxes: the first-year surprise

Your employer was withholding taxes from every paycheck. That stops the day you retire. If you take IRA distributions, receive pension income, earn taxable investment income, or eventually receive Social Security — all of that is taxable, with no automatic withholding.

You generally owe quarterly estimated tax payments (Form 1040-ES) if you expect to owe $1,000 or more. 2026 deadlines:

Simpler alternative: Elect voluntary withholding on your IRA distributions using Form W-4P. Tell the custodian to withhold 20–25% of each distribution for federal taxes. This eliminates the quarterly filing discipline and the underpayment penalty risk.

Your effective tax rate in retirement is often lower than during your working years — but don't assume it's low. The Retirement Income Tax Estimator models your 2026 federal tax based on IRA distributions, Social Security, pension, LTCG, and the OBBBA senior deduction.

6. Roth conversion window: year 1 is the peak opportunity

The years between retirement and when both Social Security and RMDs begin are the best Roth conversion opportunity of your life. Income is low. Tax brackets are wide. You have years of headroom before forced distributions push your MAGI toward IRMAA territory.

In 2026, the 12% bracket extends to taxable income of approximately $48,475 (single) or $96,950 (MFJ) — and standard deductions plus OBBBA senior bonuses push those ceilings even higher in gross income terms. A married couple where both spouses are 65+, both below SS income, could convert $70,000–$90,000/year from Traditional IRA to Roth and stay entirely in the 12% bracket.

Why it matters: every dollar you convert in the 12% bracket now is a dollar that will never trigger a 22%+ RMD later, never push your SS provisional income higher, and never contribute to IRMAA surcharges. The 10-year compounding effect of this conversion can be worth $50,000–$100,000+ in lifetime tax savings for retirees with $800K+ in Traditional IRA assets.

The constraint: Roth conversions add to MAGI in the year you convert, which affects IRMAA two years later and Social Security taxation if SS has already started. See the Roth Conversion Window Calculator for your specific bracket headroom and IRMAA cliff check.

7. IRMAA look-back: protect future Medicare premiums

The two-year look-back creates an IRMAA planning horizon. Your Medicare premium in any year reflects your income from two years prior:

The 2026 IRMAA Tier 1 threshold is $109,000 (single) / $218,000 (MFJ). Crossing it costs $1,948/year per person in combined Part B + Part D surcharges. Plan Roth conversions and income draws to stay just under the cliff.⁴

8. First RMD (if you're turning 73 in 2026)

Under SECURE 2.0, required minimum distributions start at age 73 for those born 1951–1959, and age 75 for those born 1960 or later. Your first RMD is due by April 1 of the year after you reach RMD age. Taking your first RMD in the following April means two RMDs in one year — a common trap that spikes income and IRMAA.

Best practice: Take your first RMD in the year you reach RMD age (by December 31), not the following April 1. Pay the taxes that year, avoid doubling up distributions in year 2.

If you are not yet at RMD age, use this period to reduce the Traditional IRA balance through Roth conversions. Every dollar converted before RMD age reduces the future forced distribution. The RMD Calculator projects your 10-year RMD schedule and shows the Social Security provisional income cascade.

If you are already past RMD age and missed a required distribution, file Form 5329 requesting a penalty waiver. The IRS has historically granted reasonable-cause waivers for first-time missed RMDs.⁵

9. Social Security provisional income: what counts

Once you start Social Security — or if you already have — your income sources interact in ways that new retirees frequently overlook. Under IRC §86, the formula is:
Provisional income = AGI + tax-exempt interest + ½ of SS benefits

• MFJ: 50% of SS benefits taxable when provisional income exceeds $32,000; 85% above $44,000
• Single: 50% taxable above $25,000; 85% above $34,000

Most retirees with $500K+ in savings cross the 85% threshold. The practical impact: IRA distributions push SS income into the taxable column. A $20,000 IRA withdrawal can trigger $17,000 in additional taxable SS — effectively raising the marginal cost of that withdrawal to 1.85× the stated bracket rate.

Roth IRA withdrawals are excluded from provisional income, which is why preserving Roth assets for the post-SS years (when MAGI management matters most) is a core income strategy.

10. Asset location and beneficiary review

Retirement is the right moment to restructure your accounts for decumulation. During accumulation, the priority was tax-deferred growth. In retirement, the priority is tax-efficient spending. The core shift: move bonds (spending assets) into the Traditional IRA and growth stocks into the Roth — aligned with withdrawal sequencing.

Also review beneficiary designations. Beneficiary designations on IRA and 401(k) accounts override your will. Outdated designations (ex-spouse, deceased parent) create major problems. Confirm every designation is current and reflects your actual intent.

See the Asset Location in Retirement Guide for the full account-by-account framework.

Worked example: Tom and Susan, newly retired at 67/65

Tom (67) and Susan (65) just retired. MFJ. $1.2M Traditional IRA, $180K taxable brokerage, $100K Roth. Both plan to delay SS to 70. Net spending target: $75,000/year. No pension.

Estimated first-year tax outcome: $75K IRA draw + $35K Roth conversion = $110K gross income. After $47,500 in total deductions, taxable income ≈ $62,500 — paying approximately $5,400 in federal income tax (8.7% effective rate). No IRMAA in 2028 if MAGI stays just under $109K single per spouse or under $218K combined. Compared to doing no Roth conversions and letting the IRA compound to $1.6M before age-73 RMDs — where forced distributions would hit $62,000/year minimum and cross IRMAA Tier 1 — the conversion strategy is worth tens of thousands of dollars over the decade.

Frequently asked questions

Sources

1. CMS — 2026 Medicare Parts A & B Premiums and Deductibles. Standard Part B monthly premium $202.90 for 2026. Late enrollment penalty: 10% per 12-month period without qualifying coverage, permanent. IEP runs 7 months (3 before, birthday month, 3 after turning 65). SSA Form SSA-44 process for IRMAA appeals on life-change events confirmed via SSA.gov.
2. SSA — Effect of Early or Delayed Retirement on Retirement Benefits. Delayed retirement credits: 8%/year from FRA to 70 for those born 1943 or later. FRA = 67 for born 1960+. 2026 earnings test: $24,480/year before FRA; $65,160 in year of FRA (one dollar withheld per $2/$3 over limit). Benefits restored after FRA for withheld amounts.
3. IRS Rev. Proc. 2025-32 — 2026 Adjusted Tax Parameters. 2026 standard deduction: $16,100 single, $32,200 MFJ. Additional standard deduction age 65+: $2,050 single, $1,650 per qualifying spouse MFJ. Federal income tax brackets: 10% ($0–$11,925 single / $0–$23,850 MFJ), 12% ($11,925–$48,475 single / $23,850–$96,950 MFJ).
4. CMS — 2026 IRMAA Thresholds. Tier 1 threshold: single filers MAGI above $109,000; MFJ above $218,000 (based on 2024 MAGI). Part B IRMAA Tier 1 surcharge: $54.90/month per person. Part D Tier 1 surcharge: $12.90/month per person. Combined Tier 1 additional cost: approximately $812/year per person. Full 5-tier table in our Medicare IRMAA Planning Guide.
5. IRS Publication 590-B — Distributions from Individual Retirement Arrangements. SECURE 2.0 RMD ages: 73 for born 1951–1959; 75 for born 1960+. First RMD deadline: April 1 of the year after reaching RMD age. Late RMD penalty: 25% of the amount not distributed (reduced to 10% if corrected within 2 years). Form 5329 for penalty waiver requests (historically granted for first-time mistakes with reasonable cause). Inherited IRA annual RMD requirement when decedent died after RBD per T.D. 10001.

Medicare premiums and IRMAA thresholds from CMS 2026 fact sheet. Tax bracket and standard deduction amounts from IRS Rev. Proc. 2025-32. Social Security earnings test from SSA.gov. RMD rules from IRS Pub. 590-B and SECURE 2.0 (Pub. L. 117-328). OBBBA senior bonus deduction from OBBBA § 60001. Values current as of October 2026.