By James Walker — CFP® candidate, Boston MA · Updated January 2026
Inflation is the silent wealth destroyer. A dollar today buys roughly 75% of what a dollar bought in 2020 per US BLS data. Most savers do not think about this until they realize their hard-saved cash earned 0.5% in their bank while prices rose 6-9%. As I work through the CFP investments and economics modules, the inflation framework is foundational. Let me explain.
What is inflation?
Inflation is the rate of increase in the general price level of goods and services in an economy over time. If inflation is 3%, a basket of goods that cost $100 last year costs $103 this year. Your $100 in the bank still has the same nominal value but only 97% of the original purchasing power.
Per the US Bureau of Labor Statistics, the Consumer Price Index (CPI) is the official US inflation measure. The Federal Reserve targets 2% annual inflation as part of its dual mandate.
What is the difference between headline and core CPI?
Headline CPI includes all consumer items including food and energy. Core CPI excludes food and energy because those prices are volatile and short-term spikes can obscure underlying trends. The Fed primarily watches core PCE (Personal Consumption Expenditures) for monetary policy decisions, but headline CPI is what consumers feel daily.
What has US inflation looked like recently?
Per BLS data:
- 2019: 2.3%
- 2020: 1.4%
- 2021: 7.0%
- 2022: 6.5% (peaked at 9.1% in June 2022)
- 2023: 3.4%
- 2024: ~2.9%
- 2025: ~2.5% (Fed target range)
The 2021-2022 spike was driven by supply chain disruption, fiscal stimulus, and energy shocks. Inflation has cooled significantly since but remains above the long-term 2% target in some categories (housing, services).
What is the difference between nominal and real return?
This is the most important inflation concept for savers. Real return = nominal return – inflation.
- 4.5% HYSA in 3% inflation: 1.5% real return
- 0.01% checking account in 3% inflation: -2.99% real return (you lose purchasing power)
- 10% nominal stock return in 3% inflation: 7% real return
- 5% Treasury yield in 3% inflation: 2% real return
Long-term financial planning should use real returns. The 7% real return often cited for US stocks already accounts for inflation.
What does the Federal Reserve do about inflation?
Per the Federal Reserve monetary policy, the Fed raises the federal funds rate to slow inflation (making borrowing more expensive cools demand) and lowers rates to stimulate growth. The Fed raised rates from 0-0.25% in early 2022 to 5.25-5.50% by mid-2023 to combat the 2021-2022 inflation spike. Rates began declining in 2024-2025 as inflation moderated.
Fed policy affects mortgage rates, auto loan rates, credit card APRs, HYSA yields, bond prices, and stock valuations – basically everything financial.
How do I protect my savings from inflation?
Different categories of savings deserve different inflation defenses:
Emergency fund (3-6 months expenses): Keep in a high-yield savings account. Yes, you may lose slightly to inflation, but liquidity matters more than purchasing power preservation for this bucket. Top HYSAs at 4.5-5% partially offset 2-3% inflation.
Short-term goals (1-3 years): CDs, Treasury Bills, money market funds. Currently yielding 4-5% – mostly keeping pace with inflation.
Medium-term (3-10 years): I-Bonds, TIPS, short-to-intermediate bond funds. I-Bonds are direct inflation-protection – the rate adjusts twice yearly based on CPI per TreasuryDirect.
Long-term (10+ years): Stock index funds. Equities have historically delivered the strongest real returns over long horizons (~7% real for US stocks).
What are I-Bonds?
Series I Savings Bonds are US Treasury bonds with rates that adjust for inflation. Composite rate = fixed rate + variable rate (semi-annual inflation adjustment). Maximum purchase: $10,000/year per Social Security number, plus $5,000 with tax refund. Hold at least 1 year (forced); 5-year minimum to avoid 3-month interest penalty. Tax-deferred until redeemed; state-tax-free.
What are TIPS?
Treasury Inflation-Protected Securities adjust both principal and coupon for CPI inflation. As inflation rises, the principal value rises, and the coupon (a fixed percentage of principal) pays more dollars. Available in 5, 10, and 30-year maturities. You can buy individual TIPS at TreasuryDirect or through ETFs like TIP (iShares TIPS Bond ETF) and SCHP (Schwab US TIPS ETF).
Why do stocks generally outpace inflation?
Companies pass through input cost increases as price increases to customers, growing nominal revenue and profits in line with (or above) inflation. Their share prices reflect this nominal earnings power. Over long horizons, US stocks have delivered roughly 7% real return – meaningfully positive after subtracting inflation.
Caveat: high-and-rising inflation often produces poor short-term stock returns as the Fed raises rates, valuations compress, and corporate margins get squeezed. The long-term inflation hedge from equities works on 10+ year horizons, not 1-2 year horizons.
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Frequently Asked Questions
Is inflation good or bad?
Moderate inflation (2-3%) is generally considered healthy – it incentivizes spending and investment over hoarding, encourages business expansion, and prevents deflationary spirals. High inflation (>5%) erodes savings, distorts price signals, and disproportionately hurts fixed-income retirees. The Fed targets 2% as the sweet spot.
What is hyperinflation?
Hyperinflation is extremely high (typically 50%+ monthly) inflation that destroys currency value rapidly. Modern examples include Zimbabwe in the 2000s and Venezuela in the 2010s. The US has never experienced true hyperinflation. The 1970s ‘Great Inflation’ peaked at 14.8% annually – significant but not hyperinflation.
Should I avoid bonds during inflation?
Long-term nominal bonds lose value when inflation surprises higher than expected. TIPS, I-Bonds, and short-term bonds are more resilient. During the 2022 inflation spike, long Treasury bonds (TLT) lost over 30% while TIPS held up much better. The bond portion of your portfolio should match your time horizon and inflation expectations.
How does inflation affect Social Security?
Social Security benefits include an annual Cost of Living Adjustment (COLA) tied to CPI-W. The 2023 COLA was 8.7% (largest in 40 years), 2024 was 3.2%, 2025 was 2.5%. Retirees on Social Security are partially protected from inflation, though COLA can lag actual cost increases for the elderly (especially healthcare).
What is shrinkflation?
Shrinkflation is when companies reduce product size (or quality) without lowering price – effectively a hidden price increase. A box of cereal goes from 18oz to 16oz at the same $4.99 price = 12.5% effective price hike. CPI methodology attempts to capture this through unit pricing adjustments, but the effect is often understated in official inflation measures.
Final thoughts from a CFP candidate
Inflation is one of the most important concepts for any saver to understand. Cash earning 0.5% in your bank during 3% inflation is genuinely losing 2.5% of purchasing power every year – a real economic loss even though the nominal balance does not decrease.
Match your inflation defense to your time horizon: HYSA for emergency funds, TIPS/I-Bonds for medium-term, equity index funds for long-term. The biggest inflation mistake is keeping multi-year savings in a checking account paying 0.01%. Move that money to assets that at least keep pace with inflation.
