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Updated September 26, 2026
Understand the numbers

Social Security & Medicare Guides

Short, source-backed explanations that start with the practical question.

Social Security and Medicare rules can be easier to use when each question is separated into a clear topic. This guide library groups our explanations into cost-of-living adjustments, payment dates, and Medicare's effect on Social Security benefits. Start with the topic that matches the decision or notice in front of you, then follow the links to a focused explanation or calculator.

The COLA collection explains how the adjustment is calculated, when the next figure can be known, and why a gross increase may not match the amount deposited. The payment collection maps the Social Security and SSI schedule rules and points to the payment-date tool. The Medicare collection focuses on Part B premiums, hold-harmless protection, and the difference between a gross benefit and a net deposit.

Every guide is written in plain English and separates official information from estimates or planning scenarios. Guide cards show the question covered and an expected reading time. For the figures behind an explanation, use the source directory. For details about calculations, status labels, and update practices, read the methodology page. These guides provide general information, so personal benefit details should still be confirmed with the official agency notice or account.

Complete library

All Social Security and Medicare guides

COLA basics

How Social Security COLA Is Calculated

The six CPI-W numbers behind every COLA, explained in plain English.

5 min read
2027 tracker

When Will the 2027 COLA Be Announced?

The CPI release schedule, what is known now, and what remains uncertain.

4 min read
Medicare

How Medicare Part B Can Shrink Your COLA Raise

Why the headline increase and the money reaching your bank can differ.

6 min read
Medicare protection

Medicare Hold-Harmless Rule: Who It Protects and How the Cap Works

When a Part B premium increase can be limited by a Social Security COLA—and when it cannot.

7 min read
Payment rules

SSI vs. Social Security Payment Dates: Why the Schedules Differ

A plain-English map of first-of-month, third-of-month, and Wednesday payment schedules.

6 min read
Birthday schedule

Social Security Payment Schedule by Birthday

Find Social Security payment dates by birthday for this month and next, with separate dates for SSI and people paid on the 3rd.

3 min read
Early deposits

Why Social Security Payments Sometimes Arrive Early

Why a weekend or legal public holiday can move a scheduled benefit payment to an earlier date.

2 min read
CPI-W measure

Why Social Security Uses CPI-W for COLA

Why CPI-W is the legal COLA measure, how SSA compares third-quarter averages, and why one month cannot determine the result.

2 min read
Claiming decision

When to Claim Social Security: Timing, Trade-Offs, and Decision Factors

A structured framework to evaluate claiming at 62, Full Retirement Age, or 70 based on health, cash flow, taxes, and longevity.

6 min read
Break-even analysis

Social Security Break-Even Age: How It Works and What It Tells You

Learn how to calculate the crossover age between claiming early versus delaying Social Security, and how to use break-even analysis wisely.

5 min read
62 vs FRA

Claiming Social Security at 62 vs. Full Retirement Age (FRA)

Compare early claiming at 62 with waiting for your Full Retirement Age, including the exact reduction percentages and cumulative totals.

5 min read
FRA vs 70

Delaying Social Security from Full Retirement Age to Age 70

Understand how delayed retirement credits work, the guaranteed 8% annual boost, and why credits stop accruing after age 70.

5 min read
Working while claiming

Can You Work While Collecting Social Security in 2026?

Rules, earnings limits, check withholding, and how withheld benefits are credited back at Full Retirement Age.

5 min read
2026 limits

Social Security Earnings Limit for 2026

Understand the 2026 annual limits: $24,480 if under FRA all year and $65,160 in the year you reach FRA.

4 min read
Grace year rule

Social Security First-Year Rule and Monthly Earnings Test

How the monthly earnings test protects your benefit checks in your first year of retirement, even if you earned over the annual limit.

5 min read
Countable income

What Income Counts Toward the Social Security Earnings Test?

A clear breakdown of countable wages and self-employment earnings versus excluded pensions, 401(k) withdrawals, and investments.

4 min read
Calculation formula

How Social Security Retirement Benefits Are Calculated

A complete walkthrough of the statutory formula: wage indexing, the top 35 years, AIME, and the 3-tier bend point formula.

6 min read
35-year rule

The Social Security 35-Year Rule: How Zeroes and Work History Shape Your Benefit

Why Social Security averages exactly 35 years of work, how missing years reduce your checks, and how working longer replaces lower earnings.

5 min read
AIME vs PIA

AIME vs. PIA: What Every Social Security Beneficiary Needs to Know

Understand the crucial difference between Average Indexed Monthly Earnings (AIME) and your Primary Insurance Amount (PIA), and how progressive bend points link them.

5 min read
Working longer

How Continuing to Work Affects Your Social Security Benefits

Discover how working past age 62 or Full Retirement Age changes your 35-year earnings base, triggers statutory recomputations, and increases delayed retirement credits.

6 min read