Turn today's purchase into tomorrow's financial freedom.
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Investment Strategies
A simple, tax efficient framework for building long term financial freedom.
Tap a step to expand.
1 · Open a brokerage account
A brokerage account is the basic entry point. Major low cost
brokers like Charles Schwab, Vanguard, or Fidelity are free to open
and offer access to low cost index funds.
2 · Consider Roth and taxable accounts
A Roth IRA can be a strong tax advantaged account because it may
grow and be withdrawn tax free in retirement. A taxable brokerage
account can add flexible investing on top.
3 · Consider broad index funds as a core
Broad index funds can be used as a core position. An S&P 500
fund or a similar broad market fund gives wide exposure, and some
investors add individual stocks or crypto around that core based on
risk comfort. For scale, ~$350/month at 12% can grow past $1M in 30
years. Model it in the
Compound Check tab.
4 · Consider borrowing or an emergency fund
For mature taxable accounts, borrowing against the portfolio with
an SBLOC or using an emergency fund can sometimes cover major
expenses instead of selling. This may help investments keep
compounding and may defer capital gains tax.
5 · Consider gradual Roth conversions
Partial 401(k) to Roth IRA conversions can be reviewed over time.
When they fit the tax situation, they may help spread taxes across
lower brackets instead of creating a larger tax bill on withdrawals
later.
Want a plan tailored to your age, budget, and risk level? Copy the
prompt below into your favorite AI assistant.
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About
Spend Check is an opportunity cost lost calculator. It shows you
the cost small purchases add up to over time, and what that same
money could become if invested instead. Small choices, compounded
over decades, are one of the most powerful wealth-building forces
you control.
Spend Check is designed as a tool to help you get started. It is
not investment advice or a replacement for a
professional. It is recommended that investment decisions be reviewed
with a qualified investment professional and/or a tax professional
before acting on the strategies.
Spend Check is more than a compound interest calculator, it's a visual tool to understand the opportunity cost of small purchases over time. Every purchase decision has a hidden cost: the potential growth that money could have achieved if invested instead. By visualizing this opportunity cost, Spend Check helps you make more informed financial decisions and build long term wealth.
Enter the cost of your intended purchase. This could be anything from everyday discretionary spending like shoes ($50 to $200), watches ($100 to $800), coffee ($3 to $5/day or $1,100 to $1,800/year), dining out, electronics, or larger purchases like furniture. The average American spends about $1,200 monthly on discretionary items. That is money that could be working for your future instead.
Enter your expected annual return rate. Well diversified equity portfolios have historically returned 8% to 12% annually, often outperforming the S&P 500 by 2 to 4 percentage points when actively managed. More aggressive or concentrated portfolios can see 10% to 15% returns, with some concentrated portfolios achieving even higher rates. Conservative estimates use 7% to 8%, while aggressive growth portfolios might target 10% to 15%. Consider your risk tolerance and investment timeline when setting this rate.
Enter the investment timeframe in years. For retirement planning, this is typically your years until retirement. The power of compound interest becomes most dramatic over longer periods. Even an extra 5 to 10 years can double your final amount. Remember, successful long term investing requires discipline to leave the money in your account and resist the temptation to dip into retirement funds for discretionary spending or emergencies.
The lump sum you are investing today. Even a modest starting amount benefits enormously from compounding over time. A $1,000 investment at 8% for 30 years grows to over $10,000 without adding another dollar.
Optional regular contributions added each month. Consistent monthly investing, also called dollar cost averaging, is one of the most powerful wealth building habits. Even $100/month at 8% over 30 years adds over $136,000 to your balance.
The annual interest or return rate. The S&P 500 has averaged ~10% annually over the long term. Use 6% to 7% for a conservative estimate, 8% to 10% for moderate, and 10% to 15% for aggressive growth assumptions.
How often interest is added back into the balance. Annual compounding is the most typical assumption for long term return estimates, while monthly or quarterly can be useful for accounts that credit interest more often. More frequent compounding can grow money slightly faster because each period's interest starts earning interest too.
How long your money stays invested. Time is the most powerful variable in compounding. Doubling your time period can more than quadruple your end balance. Start as early as possible.
