Savings vs Portfolio Investing Calculator
What-If savings versus a blended ETF, stock, and crypto portfolio over the exact same period
Calculator inputs
This amount will be allocated across the selected assets based on your chosen allocation.
Savings Account
- Interest Earned
- Annual Interest Rate
- Investment Duration
Portfolio
- ETF Return
- Stock Return
- Crypto Return
- Blended Portfolio Return
- Investment Duration
Savings vs Portfolio: Head-to-Head
Portfolio Growth Over Time
What Is a Blended Portfolio?
A blended portfolio spreads a single investment across more than one asset class -- here, an ETF, an individual stock, and a cryptocurrency -- each holding a percentage of the total. Instead of putting everything into one asset, the overall portfolio return becomes a weighted average of how each piece performed, which can smooth out some of the ups and downs of any single holding.
How the Portfolio Return Is Calculated
This calculator applies your chosen percentages directly to each asset's own historical return: Portfolio Return = (ETF % × ETF Return) + (Stock % × Stock Return) + (Crypto % × Crypto Return). The three percentages must add up to 100%, since together they represent the entire initial investment split across the three assets.
Why Diversifying Across Asset Classes Is Different From Diversifying Within One
An ETF like SPY already diversifies across hundreds of companies, but this calculator goes a step further by also blending in a single stock and a cryptocurrency -- two asset classes that often behave very differently from broad stock indexes and from each other. That can change the overall risk profile substantially compared to holding any one of the three alone.
Savings vs. a Blended Portfolio: The Core Trade-Off
A savings account offers stability, deposit insurance, and same-day access to your money, with modest, predictable growth. A blended portfolio of an ETF, a stock, and crypto carries real market risk on all three legs -- including the possibility that all three decline at once -- in exchange for potentially higher long-term growth. The right mix, including how much (if any) to allocate here at all, depends on your goals, timeline, and comfort with volatility.
Business Days Only, Even for the Crypto Portion
Unlike the standalone Crypto calculator on this site, this calculator restricts start and end dates to business days (Monday through Friday). That is because the ETF and stock legs of the portfolio only have real closing prices when markets are open, and all three legs need to use the same start and end date for the blended return to make sense.
Historical Performance Context
Because this calculator blends three different asset classes, its historical performance over any given window reflects how ETFs, individual stocks, and crypto happened to perform relative to each other during that specific period -- which can vary enormously depending on the exact dates and holdings chosen. Past performance over any historical window, including the one you selected above, does not predict future results.
Important Investment Risks
Unlike a savings account, none of the three legs of this portfolio are insured, and each can lose substantial value independently or all at once. The calculations on this page use historical closing prices only and exclude dividends, staking rewards, trading fees, and taxes, so real-world results will differ. This tool is for educational purposes only and is not personalized financial, investment, or tax advice.
Frequently Asked Questions
The three percentages represent how your entire initial investment is split across the ETF, stock, and crypto legs. If they do not sum to 100%, the blended portfolio return would not correspond to a real, fully-invested allocation, so the calculator shows a warning and will not run until they add up correctly.
That asset simply contributes nothing to the blended return, as long as the other two percentages still add up to 100% between them. This is a valid way to model a two-asset portfolio using this same calculator.
The ETF and stock legs of this portfolio only have real closing prices on business days, since U.S. stock markets are closed on weekends. Since all three legs must share the same start and end date, the whole calculator is restricted to business days even though crypto itself trades every day.
Yes. Each of the three legs -- the ETF, the stock, and the cryptocurrency -- uses actual historical closing prices for your selected tickers, over the exact start and end dates you choose.
No. This calculator compares historical closing prices only across all three legs and does not include dividends, staking rewards, trading fees, or taxes.
Savings growth is calculated using annual compound interest with the formula Final Value = Principal × (1 + Rate)^Years, where Years is the exact time span between your selected start and end dates.
This calculator is provided for educational purposes only and does not constitute financial, investment, or tax advice. Returns shown are based on the historical closing-price performance of the selected ETF, stock, and cryptocurrency and do not reflect dividends, staking rewards, trading fees, or taxes. Historical performance does not guarantee future results.