I want to pay my late 60s parents $1,000 monthly for babysitting. They refuse the money: should I invest it for them instead?

A listener named Carrie Anne wrote into the Rich Habits Podcast with a dilemma many adult children will recognize. She wants to pay her late 60s parents $1,000 a month for watching her kids. The parents refuse the cash outright and, in her own words, would probably spend any of it on toys and clothes for the grandkids anyway.

Host Robert Croak’s answer: open a joint brokerage account, invest the money in their name, and build them a nest egg whether they actively participate or not. “I love this idea. It’s super simple. You could sit down with her, do it in a few minutes, maybe 10 or 15 minutes, get it up and running, and then really set them up,” Croak said. Co-host Austin Hankwitz added the math, suggesting roughly $900 a month into dividend-paying ETFs like SPY and the NEOS Nasdaq-100 High Income ETF (NASDAQ:QQQI).

The Verdict: Right Instinct, Wrong Account Structure

The investing instinct is sound. The joint account proposal is where the plan can go sideways.

Putting the money to work beats handing over $1,000 in cash that gets redirected to Amazon orders. The mechanics Hankwitz described hold up. “$900 a month over the course of 12 months is about $11,000, which will then begin to pay about $100 a month of income,” he said. The SPDR S&P 500 ETF (NYSE:SPY) currently yields around 1%, so $11,000 invested generates a modest income stream that grows as both the share count and the per-share dividend rise over time.

Then comes the compounding. SPY trades near $767 today. Long-run S&P 500 returns average closer to 10% nominal, and after subtracting core PCE inflation, which the Bureau of Economic Analysis reported at 3.3% year-over-year as of June 2026, real returns land closer to 6.7%. That trailing decade ran unusually hot, so anchoring expectations to long-run averages rather than recent performance is the more disciplined approach.

Run $900 a month at a 6.7% real return for 20 years and the portfolio lands near $450,000 in today’s dollars. At 10% nominal for the same period, the figure climbs to roughly $683,000. With parents potentially living another 20 to 30 years, Hankwitz’s pitch of building “a huge nest egg that passes directly on to the kids” is realistic arithmetic.

The Variable That Changes Everything: Whose Name Is on the Account

Croak proposed a joint account. That is the part worth slowing down on.

A joint brokerage creates mutual liability. If a parent gets sued, has a car accident with insufficient insurance, or accumulates medical debt, the entire balance sits exposed to their creditors. The reverse applies equally: if Carrie Anne faces a lawsuit or divorce, her parents’ nest egg becomes part of the contested estate. Estate planning attorneys routinely flag joint titling between adult family members as one of the most underappreciated risks in family finance.

Three cleaner structures exist:

1. A taxable brokerage in your parents’ names only. You gift the monthly amount. The 2026 annual gift tax exclusion sits at $19,000 per recipient per donor, so $900 a month per parent fits comfortably inside the limit with no gift tax return required. When they pass, the assets receive a step-up in cost basis, erasing embedded capital gains for heirs. For larger wealth transfers, the One Big Beautiful Bill Act, signed into law on July 4, 2025, raised the per-individual lifetime estate and gift tax exemption to $15 million effective January 1, 2026, indexed for inflation beginning in 2027, giving families considerably more room before any federal gift tax applies.
2. A taxable brokerage in your name, earmarked for them. You retain full control, pay tax on dividends and gains, and decide the disposition. The trade-off: no step-up in cost basis at death, because the account never passes through their estate.
3. A transfer-on-death (TOD) account in your parents’ name with you as beneficiary. Same tax treatment as option one, with a direct transfer at death that skips probate entirely.

The right choice depends on whether your parents can be trusted not to touch the account, whether their estate carries meaningful creditor exposure, and whether the step-up in cost basis matters given the eventual portfolio size.

What to Actually Do

1. Settle titling before anything else. Do not open the account until that decision is made.
2. Open a low-cost taxable brokerage at any major custodian. SPY carries an expense ratio of 0.09%, and as of June 30, 2026, its top holdings per the State Street fact sheet include NVIDIA at 7.5%, Apple at roughly 6.6%, and Microsoft at roughly 4.3%, giving the parents broad exposure to the U.S. market through a single ticker.
3. Automate the monthly purchase so it stops being a decision you revisit each month.
4. Document the arrangement in a one-page letter so everyone, including future executors, understands the account’s purpose.
5. Revisit the structure if your parents’ health, your own balance sheet, or estate tax law shifts materially.

Croak and Hankwitz got the spirit of the answer right. The math works. The one word they glossed over, “joint,” is the one that deserves the most scrutiny.

Editor’s note: This pass updated SPY’s price to approximately $767, reflecting the August 31, 2026 closing price, and corrected the core PCE inflation figure to 3.3% year-over-year as of June 2026 per the Bureau of Economic Analysis, adjusting the long-run real return estimate and 20-year compounding projection accordingly. The annual gift tax exclusion was confirmed at $19,000 per recipient for 2026, and details on the One Big Beautiful Bill Act’s $15 million per-individual estate and gift tax exemption, effective January 1, 2026 and indexed for inflation from 2027, were verified against multiple legal sources.

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