15 New Free 2026 Retirement Calculators — FERS, QLAC, QCD, Bond Tent & Monte Carlo

Tonight I shipped 15 new retirement and tax calculators built around questions that actually move the needle for people approaching or in retirement. Each tool cites the official source — IRS, SSA, OPM, TreasuryDirect — because vague rules-of-thumb cost real dollars in this category.

Featured: Monte Carlo Retirement Calculator → — runs 1,000 randomized trials to show success probability, not just averages.

Why These 15 Tools

The "retirement calculator" keyword family gets 301,000 monthly US searches at $3.37 CPC (Google Ads data via DataForSEO, April 2026). But the head terms are dominated by Bankrate, NerdWallet, and SmartAsset — sites with DA 90 and $50M+ marketing budgets. The win is in the long-tail: 4-7 word queries with 500-50,000 monthly volume and LOW competition. Tonight's builds target that gap.

Federal Employees & Medicare

  • FERS Pension Calculator → — high-3 × years × multiplier (1.0% or 1.1% at 62+). Includes MRA eligibility, FERS Special Retirement Supplement, FEHB 5-year rule, and the 50% survivor benefit reduction. Per OPM FERS computation guidance.
  • Social Security Tax Cap 2026 → — $176,100 OASDI wage base, the cap-out paycheck timing for high earners, and the 0.9% Additional Medicare surcharge above $200K (single) / $250K (MFJ).
  • Medicare MAGI Calculator → — converts your 2024 AGI into 2026 IRMAA tier with the four MAGI add-backs (tax-exempt interest, foreign earned income, US Savings Bond interest, adoption benefits).

Sequence Risk & Glidepath Strategy

Income Strategies

Tax & Self-Employment

  • QCD Calculator → — Qualified Charitable Distribution: $108,000 per person 2026 limit, satisfies RMDs without raising MAGI, prevents IRMAA cliffs.
  • 1099-K Threshold 2026 Calculator → — federal $2,500 threshold for 2026 plus state thresholds in MA, VT, VA, IL, DC. Includes Schedule 1 reversal mechanics for personal transfers wrongly reported.
  • Safe Harbor 401(k) Calculator → — basic match vs enhanced match vs 3% non-elective for small employers bypassing ADP/ACP testing.
  • Owner-Only 401(k) Calculator → — Solo 401(k) for self-employed: $23,500 employee deferral + 25% employer profit-share, up to $70,000 combined for 2026.

Behavioral Finance

  • Opportunity Cost Calculator → — what would $5,000 spent today be worth invested for 30 years at 7% real? Recurring expenses get a particularly painful number.

What's Different About These Tools

Three things separate these from the head-term competitors:

1. Real 2026 limits. $176,100 SS base, $108,000 QCD, $210,000 QLAC, $70,000 Solo 401(k) combined limit. Indexed numbers from official IRS and SSA sources, not last year's stale figures. 2. Edge-case logic. FERS multiplier check (1.1% only at 62+ AND 20 years), QLAC RMD reduction math, Monte Carlo Box-Muller normal distribution sampler, TIPS phantom income breakeven. 3. Source-cited content sections. Every tool's H2 sections cite irs.gov, ssa.gov, opm.gov, treasurydirect.gov, federalreserve.gov, kitces.com, naic.org. Google's helpful-content update penalizes vague claims; we cite specific paragraphs of specific official guidance.

All 15 tools are 100% client-side, no signups, no data leaving your browser. The Monte Carlo runs locally — your inputs never hit a server.

— Browse all Teamz Lab Tools →

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Originally published at https://tool.teamzlab.com?utm_source=blogger&utm_medium=article&utm_campaign=2026-05-nightly-44-retirement-medicare-2026

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