Comprehensive Guide
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How it works
portfolio rebalancing calculator — general takes your inputs and produces new allocation. Calculate exact trades needed to rebalance your portfolio back to target allocation. You provide 4 inputs: Portfolio Total (currency, in dollars) (default: 200000 dollars); Current Stocks % (percent, in percent) (default: 70 percent); Target Stocks % (percent, in percent) (default: 60 percent); Current Bonds % (percent, in percent) (default: 20 percent). The calculator returns 1 output: New Allocation (the primary result). Investment calculations rest on a few variables — principal, return rate, time, and compounding — but their interaction is non-linear enough that intuition alone gets the answer wrong more often than not. This tool runs the real formula with your inputs and shows the numbers that matter, not the rounded approximations from a textbook. With the default values, new allocation is computed from the interaction of every input field — change any one of them and the result updates immediately, so you can stress-test different scenarios without re-entering the whole form. Adjust the inputs to match your real financial situation. The defaults are realistic starting points, but every person's circumstances differ — your actual income, expenses, rates, and timelines will produce a different answer. Use the tool iteratively: start with the defaults, then change one variable at a time to see which factor has the largest impact on your outcome.Tips
- Start with the default values to see a baseline result, then change one input at a time to understand which factor matters most for your outcome.
- Replace every default with your actual number — estimates and rules of thumb produce estimates, not answers. Pull your real figures from pay stubs, statements, or account dashboards.
- Use a conservative return rate (5-6% rather than the historical 10%) for planning purposes. Markets have long flat stretches, and planning on the average sets you up for a shortfall.
Frequently asked questions
How do I rebalance my portfolio?
Sell $20K stocks (70%→60%), buy $20K bonds (20%→30%). Tax-efficient: use new contributions first. Rebalance annually.
What does the portfolio rebalancing calculator — general calculate?
It takes portfolio total, current stocks %, target stocks %, current bonds % as inputs and computes new allocation. The primary output is new allocation. Calculate exact trades needed to rebalance your portfolio back to target allocation.
How accurate are the calculator results?
The math is exact — the same formulas a financial professional would use by hand. The precision of the output depends entirely on how realistic your inputs are. Use your actual numbers rather than estimates when possible. The defaults are reasonable starting points, but your real income, rates, and timeline will produce a different result.