00:00A $50,000 lump sum invested in a broad stock market index today would grow to roughly $160,000
00:07to $336,000 in 20 years depending on the average annual return assumed. There's no fixed answer
00:13because markets don't move in straight lines. This range comes from compounding math, not
00:19prediction. At a conservative 6% annual return, it reaches about $160,357. At the S&P 500's
00:28long-term historical nominal average of 10%, 1957 to 2023 data, it reaches about $336,375.
00:39A middle estimate around 8% lands near $233,048. Scenarios ranked by realism for a beginner's
00:47planning purposes. 1. 6-7% real inflation-adjusted return. This is the number to use for actual
00:56purchasing power planning. Historical U.S. equities have returned about 7% annually after inflation
01:02over the long run, giving roughly $160,000 to $193,000 in today's dollars.
01:092. 9-10% nominal pre-inflation return. This matches raw historical average price returns but overstates
01:18what the money will actually buy in 20 years, since inflation, historically 3% annually, erodes it.
01:243. Lower single-digit returns. 3-4%. Realistic only for conservative bond-heavy portfolios,
01:32not full-stock market exposure. Relevant if risk tolerance is low or the money is needed
01:37sooner than 20 years. This estimate changes significantly with context. It assumes no
01:43withdrawals, no added contributions, and reinvested dividends. Adding even $200 per month would push
01:50the higher return scenario well past $450,000. It also assumes 20 consecutive years without a major
01:58sustained downer near the withdrawal date, which isn't guaranteed. Sequence of returns risk matters
02:04most in the final years before you need the money. These are backward-looking averages, not guarantees.
02:10No one can confirm future returns. Practical step. Model your own numbers with a compound interest
02:15calculator using 6% and 10% as bracketing assumptions and treat 7% as your realistic default
02:23for financial planning. Finally, remember that everything we discussed today is for educational
02:28purposes only and does not constitute financial advice. Good luck to everyone and see you in the next video.