Savings & Growth

Savings & Investment Calculators

Building wealth is not about picking the right stock on the right day. It is about consistency, time, and the quiet power of compound interest. A dollar invested today is worth more than a dollar invested next year because every month that passes gives your money another cycle to earn returns on its own returns.

Whether you are just opening your first savings account, planning for retirement decades away, or evaluating a rental property, the math is the same: understand your inputs, run the numbers, and make decisions based on what the projections actually show rather than on gut feeling.

The calculators below cover the core scenarios most savers and investors face. Compound interest tells you how deposits grow over time. The savings goal calculator works backward from a target amount. Investment return and retirement projections let you model different contribution rates and timelines. Rental yield helps landlords evaluate whether a property generates enough income to justify the price. All calculations run in your browser, nothing is sent to a server, and every tool is free to use as many times as you need.

Calculators

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Frequently Asked Questions

How much should I save each month?
A common guideline is the 50/30/20 rule: save at least 20% of your after-tax income. The exact amount depends on your goals, expenses, and timeline. Use the Savings Goal Calculator to find a monthly target based on a specific goal amount and deadline.
How does compound interest work?
Compound interest earns interest on both your original deposit and all previously accumulated interest. Over time this creates exponential growth. The more frequently interest compounds (monthly vs. annually) and the longer you leave your money invested, the larger the effect.
When should I start investing?
As early as possible. Time is the single most powerful factor in compound growth. A 25-year-old investing $200/month at 7% will accumulate roughly $525,000 by age 65. Waiting until 35 to start cuts that total nearly in half. Even small amounts benefit from an early start.
What is a good rate of return on investments?
Historically, a diversified stock portfolio has returned roughly 7-10% per year before inflation (about 5-7% after inflation). Savings accounts offer 3-5% in high-rate environments. The right target depends on your risk tolerance and time horizon.
What is the difference between saving and investing?
Saving means putting money into low-risk, easily accessible accounts like savings accounts or money market funds. Investing means buying assets (stocks, bonds, real estate) that have higher growth potential but also carry more risk. Most financial plans include both.