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. Co-host Austin Hankwitz backed the idea with math, suggesting roughly $900 a month into dividend-paying ETFs like the SPDR S&P 500 ETF Trust (NYSEARCA:SPY) alongside higher-income options such as the NEOS Nasdaq-100 High Income ETF (NASDAQ:QQQI), which generates monthly distributions through a covered-call strategy on Nasdaq-100 stocks.

The Verdict: Right Instinct, Wrong Account Structure

The investing instinct is sound. 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. SPY currently yields close to 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.

The joint account proposal, however, is where the plan can go sideways. That one word deserves careful attention before anyone opens a brokerage app.

The Math: A Realistic Picture of Compounding

Then comes the compounding. SPY trades around $769 today. Long-run S&P 500 returns average closer to 10% nominally, and after subtracting core PCE inflation, which the Bureau of Economic Analysis reported at 3.0% year-over-year for August 2026 (the most recent release, published September 30, 2026), real returns land closer to 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 7% real return for 20 years and the portfolio lands near $465,000 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 its top three holdings as of late October 2026 are NVIDIA at roughly 7.9%, Apple at roughly 7.5%, and Microsoft at roughly 5.9%, 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 the core PCE inflation figure to 3.0% year-over-year (August 2026, BEA release September 30, 2026), down from the previously cited 3.3% following BEA annual benchmark revisions that also lowered July’s reading. The real-return assumption was adjusted from 6.7% to 7% and the 20-year portfolio projection updated accordingly. SPY’s price was revised to approximately $769, and Microsoft’s weighting in SPY was corrected from roughly 5.7% to roughly 5.9% per State Street’s October 20, 2026 fund fact sheet.

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