📉Inflation Impact Calculator
See what today's spending will cost in future dollars, and how much purchasing power inflation quietly erodes over a 20-30 year retirement. Inflation is the invisible tax on every fixed income.
Your Numbers
Your Results
| Year | Future Cost | Today's $ Worth |
|---|---|---|
| Year 1 | $72,100 | $67,961 |
| Year 4 | $78,786 | $62,194 |
| Year 7 | $86,091 | $56,916 |
| Year 10 | $94,074 | $52,087 |
| Year 13 | $102,797 | $47,667 |
| Year 16 | $112,329 | $43,622 |
| Year 19 | $122,745 | $39,920 |
| Year 22 | $134,127 | $36,532 |
| Year 25 | $146,564 | $33,432 |
| Year 28 | $160,155 | $30,595 |
| Year 30 | $169,908 | $28,839 |
What Is Inflation Impact?
Inflation is the silent tax on every fixed income and every dollar of savings. A retiree spending $70,000 per year today who experiences 3% annual inflation will need $113,000 in 15 years just to maintain the same lifestyle. If their income doesn't grow to match, they are quietly becoming poorer each year even if their portfolio balance stays constant.
This calculator shows two related but distinct effects: what today's spending will cost in future dollars (the future cost), and what today's dollars will actually be worth in the future (purchasing power). Both figures matter: the first tells you how much income you'll need, the second tells you how much your savings erode in real terms if they don't outpace inflation.
Inflation affects different categories of spending at very different rates, and treating retirement as a single blended inflation rate can significantly underestimate costs in the categories that matter most for retirees. Healthcare expenses have historically inflated at 5-6% per year, roughly double the general CPI rate. Housing costs in many markets have outpaced general inflation by 2-3 percentage points annually. A practical planning approach is to model your budget in two buckets: healthcare and housing expenses inflated at 5-6%, and everything else inflated at a general 3% assumption. The combined effect on a retirement spending plan over 25 years is often 15-20% higher than a single 3% assumption suggests, and knowing that gap in advance is far less stressful than discovering it mid-retirement. Tips for protecting against inflation: Social Security benefits include automatic annual Cost of Living Adjustments (COLAs) tied to CPI, making them one of the best built-in inflation hedges available. A stock-heavy portfolio has historically outpaced inflation over long periods, which is one reason a higher equity allocation in early retirement often makes mathematical sense despite feeling risky. I-Bonds and TIPS (Treasury Inflation-Protected Securities) provide explicit inflation protection for a portion of a conservative portfolio. Avoiding long-term fixed-income investments that pay a stated rate regardless of inflation, such as CDs or fixed annuities without COLAs, is particularly important during extended periods of elevated inflation.
How This Calculator Works
Future cost is calculated as your present amount multiplied by (1 + inflation rate) raised to the number of years. Purchasing power of today's dollars in the future is the inverse: $1 divided by (1 + inflation rate) to the same power. The calculator shows both, year by year, in a table.
Personal Considerations
Inflation is hard to visualize because it operates slowly and invisibly. The year-by-year table in this calculator is specifically designed to make the cumulative effect concrete. Seeing that $70,000 today becomes $113,000 in year 15 is more emotionally persuasive than reading that '3% compounded for 15 years equals a 56% increase.'
One useful planning exercise is to run this calculator with healthcare inflation (5-6%) on just the healthcare portion of your budget, and standard inflation on the rest. The combined effect on total spending over a 25-year retirement is often significantly higher than a single 3% assumption, and planning for it early is much easier than discovering it mid-retirement.
Planning fallacy makes people systematically underestimate inflation's long-term impact. A 3% annual rate sounds small, but compounding makes it large: after 25 years, the same lifestyle costs 2.1 times more in nominal dollars. Most people build a retirement plan around today's spending numbers with a vague sense that inflation will be 'managed,' without ever running the math on what their actual income will need to be at age 80. Confirmation bias shapes which inflation rate people choose: someone who wants to retire now chooses 2.5%, which gives a reassuringly manageable projection. The discipline is to run the higher rate and plan around it, treating a lower realized inflation rate as a pleasant surprise rather than a baseline assumption.
If what you're feeling goes beyond what a calculator can help with, licensed clinicians are available at SanaNetwork.com, a referral network founded by this site's founder, Dr. Yoendry Torres.
Frequently Asked Questions
For a balanced long-run assumption, 3% is reasonable. If you want to be conservative, use 3.5-4%. For healthcare-heavy spending plans, model healthcare expenses separately at 5-6%. Avoid using very low rates like 2% for long horizons; the difference between 2% and 3% compounded over 30 years is large.
A stock-heavy portfolio has historically outpaced inflation over long periods. I-Bonds and TIPS are US government securities explicitly linked to the CPI inflation index. Cash and fixed-rate bonds do not outpace inflation over time and lose purchasing power in real terms.
It shows what a dollar earned today will actually buy in each future year. If $1 today is worth $0.64 in year 15 at 3% inflation, it means the same basket of goods that costs $1 today will cost $1.56 in year 15, and your dollar only covers $0.64 worth of that basket.
Yes. Social Security benefits receive annual Cost of Living Adjustments (COLAs) tied to the CPI-W inflation index. In recent high-inflation years (2022-2023), SS beneficiaries received 8.7% and 3.2% COLAs respectively. This is one of the most valuable inflation-protection features of Social Security, particularly for long-lived retirees.