# Seniors Audit > Seniors Audit (https://www.seniorsaudit.com) is an authoritative, independent educational platform providing free interactive decision calculators, step-by-step guides, and official policy breakdowns covering Medicare enrollment, Social Security benefit claiming, retirement tax planning, IRS notice decoding, and senior financial education for American seniors aged 60 and older. ## Core Content Silos & Knowledge Hubs - [Medicare Hub](https://www.seniorsaudit.com/medicare/): Comprehensive educational guide covering Original Medicare, Medicare Advantage, Medigap, Part D, IRMAA surcharges, and enrollment rules. - [Medicare Enrollment Guide](https://www.seniorsaudit.com/medicare/enrollment/): Complete 2026 guide to Initial, Special, and General Enrollment Periods, enrollment timelines, and lifetime penalty avoidance. - [Medicare Basics & Coverage](https://www.seniorsaudit.com/medicare/basics/): Detailed breakdown of Original Medicare Part A (Hospital) and Part B (Medical) coverage rules and out-of-pocket costs. - [Medicare Costs & Penalties](https://www.seniorsaudit.com/medicare/costs-and-penalties/): Official guidelines on Part B and Part D late enrollment penalties, IRMAA surcharges, and deductibles. - [Medicare Plan Comparison](https://www.seniorsaudit.com/medicare/plan-comparison/): Side-by-side comparison of coverage structures, network restrictions, and out-of-pocket maximums. - [Social Security Hub](https://www.seniorsaudit.com/social-security/): Full claiming strategy guides, Full Retirement Age rules, spousal/survivor benefits, earnings test, and COLA adjustments. - [Social Security Full Retirement Age Guide](https://www.seniorsaudit.com/social-security/full-retirement-age-guide/): Complete birth cohort breakdown (ages 66-67) and early vs. delayed claiming calculations. - [How Much Social Security Will I Get?](https://www.seniorsaudit.com/social-security/how-much-social-security-will-i-get/): Detailed explanation of the 35-year AIME formula and bend points. - [2026 Social Security COLA Explained](https://www.seniorsaudit.com/social-security/social-security-cola-2026/): How annual inflation adjustments are calculated using CPI-W and compound over retirement. - [Medicaid & Savings Programs Hub](https://www.seniorsaudit.com/medicaid/): Guide to Medicare Savings Programs (QMB, SLMB, QI, QDWI), dual eligibility, and Medicaid dental benefits. - [IRS & Taxes Hub](https://www.seniorsaudit.com/irs/): Notice decoders for CP14, CP2000, CP504, LT11, and CP90. - [Retirement Planning Hub](https://www.seniorsaudit.com/retirement/): RMD mandatory withdrawal guides, Roth conversion analysis, and tax withholding. - [Tools & Calculators Directory](https://www.seniorsaudit.com/tools/): Central directory of all free, privacy-safe retirement, Medicare, and Social Security calculators. ## High-Authority Interactive Calculators & Tools ### Social Security Calculators - [Social Security Benefit Calculator](https://www.seniorsaudit.com/tools/social-security-benefits-estimator/): Estimate monthly Social Security retirement benefits based on 35-year average earnings history and 2026 bend points ($1,286 / $7,749). - [Social Security Benefit Cap Proposal Calculator](https://www.seniorsaudit.com/tools/social-security-benefit-cap-calculator/): Model 2032 OASI trust fund depletion risk, payroll tax cap elimination (Moreno-Warren), and Social Security 2100 Act scenarios. - [Social Security Full Retirement Age Calculator](https://www.seniorsaudit.com/tools/social-security-full-retirement-age-calculator/): Official birth-year lookup and 62/FRA/70 payout comparison. - [Social Security Break-Even Calculator](https://www.seniorsaudit.com/tools/social-security-break-even-calculator/): Mathematical break-even analysis for claiming at 62 vs. FRA vs. 70. - [SSA Earnings Test Calculator](https://www.seniorsaudit.com/tools/ssa-earnings-test-calculator/): Calculate how working before Full Retirement Age reduces monthly benefit checks under annual earnings caps. - [Social Security Spousal Benefit Calculator](https://www.seniorsaudit.com/tools/social-security-spousal-benefit-calculator/): Calculate current and divorced spousal benefits (up to 50% of primary earner PIA). - [Social Security Survivor Benefit Calculator](https://www.seniorsaudit.com/tools/social-security-survivor-benefit-calculator/): Estimate widow/widower benefits by claiming age (60 to FRA). - [Social Security COLA Estimator](https://www.seniorsaudit.com/tools/social-security-cola-estimator/): Multi-year compounding benefit projections using historical and estimated COLA rates. - [Social Security Tax Calculator](https://www.seniorsaudit.com/tools/social-security-tax-calculator/): Calculate provisional income thresholds and taxable Social Security benefits. - [Social Security Tax Withholding Calculator](https://www.seniorsaudit.com/tools/social-security-tax-withholding-calculator/): Form W-4V voluntary federal tax withholding calculation. - [SSDI Benefit Estimate Calculator](https://www.seniorsaudit.com/tools/ssdi-estimate-calculator/): Estimate potential Social Security Disability Insurance monthly payments. - [Should I Delay Social Security Wizard](https://www.seniorsaudit.com/tools/should-i-delay-social-security/): Decision tree analyzing longevity, spousal protection, and cash flow needs. ### Retirement & Tax Planning Calculators - [401(k) Withdrawal Tax Calculator](https://www.seniorsaudit.com/tools/401k-withdrawal-tax-calculator/): Model federal income taxes, mandatory 20% plan withholding, early withdrawal penalties, Rule of 55 exceptions, and net cash received. - [RMD Tax & Withholding Calculator](https://www.seniorsaudit.com/tools/rmd-tax-withholding-calculator/): Calculate required distributions from traditional IRAs/401(k)s, marginal tax impact, and voluntary withholding under SECURE 2.0. - [RMD Calculator](https://www.seniorsaudit.com/tools/rmd-calculator/): Required Minimum Distribution calculator using the IRS Uniform Lifetime Table. - [IRA Withdrawal Tax Calculator](https://www.seniorsaudit.com/tools/ira-withdrawal-tax-calculator/): Model tax bracket creep, state taxes, and net distributions on traditional and Roth IRAs. - [Retirement Tax Calculator by State](https://www.seniorsaudit.com/tools/retirement-tax-calculator-by-state/): State-by-state comparison of income taxes on pensions, Social Security, and 401(k) distributions across all 50 states. ### Medicare & Healthcare Calculators - [Medicare Enrollment Deadline Calculator](https://www.seniorsaudit.com/tools/medicare-enrollment-deadline-calculator/): Calculate exact 7-month Initial Enrollment Period dates based on birth date. - [Medicare Part B Late Enrollment Penalty Calculator](https://www.seniorsaudit.com/tools/medicare-late-enrollment-penalty-calculator/): Calculate lifetime Part B monthly premium penalty amounts based on 12-month delay periods. - [Medicare Part D Late Enrollment Penalty Calculator](https://www.seniorsaudit.com/tools/medicare-part-d-late-enrollment-penalty-calculator/): Calculate prescription drug penalty based on months without creditable coverage. - [Medicare IRMAA Income Surcharge Calculator](https://www.seniorsaudit.com/tools/medicare-irmaa-calculator/): Determine high-income Part B and Part D surcharges using 2-year prior MAGI thresholds. - [Medicare Premium Calculator](https://www.seniorsaudit.com/tools/medicare-premium-calculator/): Comprehensive monthly Medicare cost calculator combining Part A, Part B, Part D, Medigap, and IRMAA. - [MAGI for Medicare Calculator](https://www.seniorsaudit.com/tools/magi-for-medicare-calculator/): Calculate Modified Adjusted Gross Income specifically for IRMAA and subsidy brackets. - [Medicare Donut Hole Calculator](https://www.seniorsaudit.com/tools/medicare-donut-hole-calculator/): Out-of-pocket prescription drug cost calculator under the $2,000 Part D cap. - [Medigap Comparison Tool](https://www.seniorsaudit.com/tools/medigap-comparison-tool/): Compare standardized Medigap Plans A through N, with detailed Plan F, G, and N value metrics. - [Medicare Advantage Comparison Tool](https://www.seniorsaudit.com/tools/medicare-advantage-comparison-tool/): Side-by-side comparison of HMO vs. PPO plan structures, prior authorizations, and out-of-pocket maximums. - [Medicare Savings Programs Estimator](https://www.seniorsaudit.com/tools/medicare-savings-estimator/): Eligibility screener for QMB, SLMB, and QI low-income premium assistance programs. - [Universal Senior Benefits Screener](https://www.seniorsaudit.com/tools/universal-senior-benefits-screener/): Screener for low-income assistance programs including Medicare Savings Programs, Extra Help, and SNAP. ### IRS Notice Decoders - [IRS CP14 Notice Decoder](https://www.seniorsaudit.com/tools/irs-cp14-notice-decoder/): Plain-English explanation and action steps for official IRS unpaid tax balance notices. - [IRS CP2000 Response Guide](https://www.seniorsaudit.com/tools/irs-cp2000-response-guide/): Step-by-step response wizard for reported income mismatch notices. - [IRS CP504 Notice Decoder](https://www.seniorsaudit.com/tools/irs-cp504-notice-decoder/): Urgent action guide for IRS Notice of Intent to Levy. - [IRS LT11 Notice Decoder](https://www.seniorsaudit.com/tools/irs-lt11-notice-decoder/): 30-day hearing request guide for final notice of intent to levy. ## Optional - [Full Content Export](https://www.seniorsaudit.com/llms-full.txt): Complete concatenated text index of core educational content for AI models and research crawlers. ## Editorial & Sourcing Policy - All content is educational only and does not constitute legal, financial, tax, or medical advice. - Information is sourced directly from official government documentation (.gov), including the Centers for Medicare & Medicaid Services (CMS), Social Security Administration (SSA), Internal Revenue Service (IRS), and Code of Federal Regulations (CFR).