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Wealth Builder

Compound Interest Calculator for Columbus

The most powerful force in the universe? Compound interest. See how your money can grow to match the cost of living in Columbus.

The "Real" Rate of Return (10 Year Scenario)
Gross Profit
$6,289
Inflation & Tax Drag
-$4,168
(The "Silent Tax")
Real Buying Power
$2,121
What you actually keep
The Silent Tax

Fighting Local Inflation

Your bank might advertise a 5.0% yield, but in Columbus, that number is misleading. With inflation averaging ~3% long-term, your money's purchasing power is constantly eroding. This "Silent Tax" means your "Real" rate of return—what you actually keep in buying power—is roughly 1.94% before taxes are even touched.

The Tax Drag

Don't forget the Ohio Department of Revenue. Unlike stock dividends (often taxed lower), bank interest is taxed as ordinary income. In Ohio, you face a combined marginal tax drag (Federal + State) of roughly 24.8%. This reduces your effective yield significantly, meaning you need a higher nominal rate just to break even in real terms.

Compounding Power

Frequency matters. While the rate is king, *how often* that rate is applied can boost your returns. Compounding daily versus annually on a $10k deposit earns you an extra $198 over a decade without lifting a finger. Always look for accounts that compound daily or monthly to maximize growth in Columbus.

Quick Tip: The Rule of 72

Want a quick mental math trick? Use the "Rule of 72." Divide 72 by your interest rate (5). At current rates, your money will double in value approximately 14.4 years. This simple heuristic helps you set realistic timelines for your Columbus savings goals.

Becoming a Columbus Millionaire

To reach $1,000,000 in purchasing power in Columbus (adjusted for local costs and inflation), passive saving isn't enough. You need to save aggressively and invest. A simple savings account is a parking spot for your emergency fund, not the engine for building generational wealth in Ohio.

Common Questions

Tools & Data Verified by the EverydayCalculators Financial Research Team.

Last updated: December 2025.

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