Grandparents face a different version of the family investing question than parents do. The legal account is usually the parent's to open; the grandparent's role is funding. The question is how to fund efficiently — and for grandkids born 2025–2028, the federal Trump Account makes that calculus different.
How we ranked these
Slyce is on this list because it supports parent-directed Trump Account routing alongside custodial UTMAs in the same app — useful when grandparents are coordinating with parents on a 2025–2028-eligible kid's account. We're honest about where Slyce isn't the right fit (specific-stock gifts of large dollar amounts).
Criteria, in order:
- How easy is it for a grandparent to fund a parent-owned account.
- Does the app support Trump Account routing for in-window grandkids?
- What account types are supported overall?
- Cost. Subscription costs eat small custodial balances.
- Honest tradeoffs.
1. Slyce — for grandparents of 2025–2028 babies
What it offers: parent-owned custodial UTMA plus Trump Account routing for kids born 2025–2028. Grandparents can gift money to the parent who then directs deposits via Slyce[1].
Pricing: $0 per month.
Where Slyce wins for grandparents: if the grandkid is in the 2025–2028 federal Trump Account eligibility window, Slyce is the only app on this list that combines spend-to-own custodial UTMA with Trump Account deposit routing. The Trump Accounts guide covers the federal $1,000 seed and the $5,000 family contribution cap.
Where Slyce doesn't win for grandparents: for direct stock gifts (specific tickers, large dollar amounts), brokerage-to-brokerage transfers at Fidelity / Schwab are simpler. Slyce's mechanic is per-purchase, not large lump-sum.
2. Fidelity custodial UTMA — for direct stock gifts
What it offers: standard Fidelity UTMA opened by the parent. Grandparents can transfer specific stocks directly via brokerage transfer or contribute via check/wire[2].
Pricing: $0 per month.
Where Fidelity wins for grandparents: if you want to gift specific stocks (Berkshire Hathaway, an old AT&T position, etc.) directly into a grandkid's account, brokerage-to-brokerage transfers are the cleanest path. Bank-grade safety, full Fidelity research tools, and the no-fee structure all support large-balance custodial accounts well.
Where Fidelity doesn't win for grandparents: no spend-to-own, no Trump Account routing automation, no round-ups. The app is feature-dense and assumes some investing literacy from the parent custodian.
3. Schwab custodial UTMA — alternative to Fidelity
What it offers: standard Schwab UTMA, similar to Fidelity's offering. Schwab also has its own committed Trump Account employer match for Schwab employees[3].
Pricing: $0 per month.
Where Schwab wins for grandparents: same brokerage-grade reasons as Fidelity. If the family already banks at Schwab, consolidating accounts at Schwab simplifies tax-document handling at year-end.
Where Schwab doesn't win for grandparents: same as Fidelity — no automation, no round-ups, no consumer-app polish.
4. Acorns Early — round-ups via the parent
What it offers: parent-controlled custodial UTMA inside Acorns Early. Grandparents would gift to the parent's separate spending account, and round-ups from that spending fund the kid's UTMA[4].
Pricing: higher Acorns tier.
Where Acorns Early wins for grandparents: if the parent already runs Acorns and grandparents want to fund passively through gift-funded spending, Acorns Early is a clean continuity choice.
**Where Acorns Early doesn't win for grandparents: subscription cost. No Trump Account routing. The diversified-ETF approach means the grandkid doesn't end up owning specific brands the family or grandparents care about.
5. 529 plan (state-administered) — for college-specific gifts
What it offers: state-sponsored education savings with state-level tax advantages. Most states allow non-custodian family members (including grandparents) to contribute directly to a 529 in the kid's name.
Pricing: $0 per month for direct-sold 529s.
Where 529s win for grandparents: education-specific savings with tax advantages. Some states give residents a state income tax deduction on contributions. A grandparent-owned 529 also has historical FAFSA advantages, though the rules have evolved.
Where 529s don't win for grandparents: if the kid doesn't end up needing the money for education, withdrawals are penalized. The 529 is a single-purpose tool. For broader flexibility, a UTMA is more useful.
On the Trump Account layer
For grandparents of kids born 2025–2028, the federal Trump Account is genuinely material[3]. The federal $1,000 seed and any employer matches stack independently of grandparent contributions. A grandparent's gift up to the $5,000 annual family contribution cap is among the highest-leverage gifts available — every dollar contributed compounds over the kid's full childhood and beyond.
Coordinate with the parent before contributing — the $5,000 cap is per child, per year, across all family contributors. A grandparent's $5,000 plus the parent's $5,000 in the same year would exceed the cap. The cap itself is enforced at the program level, not by the individual contributor.
For the eligibility specifics, see Trump Account eligibility. The eligibility checker sorts the full stack for any specific grandkid.
On gift tax
The IRS sets an annual gift tax exclusion that covers most grandparent gifts[5]. Each grandparent can give each grandchild up to the annual threshold without filing a gift tax return. A married couple can effectively double that amount per grandchild per year by gift-splitting.
For gifts above the annual threshold, file Form 709 — but a gift tax return doesn't necessarily mean tax owed. The lifetime gift and estate exemption is well above the annual limit. Most grandparent gifts to a kid's investing account never come close to either threshold.
Specific tax planning around large multi-year gifting strategies is beyond this article's scope. Consult a tax professional for high-dollar gift planning.
Verdict by grandparent goal
- Grandkid born 2025–2028 — want to fund the Trump Account: Slyce or direct contribution via the parent's existing setup.
- Want to gift specific stocks (Berkshire Hathaway, old AT&T position, etc.): Fidelity or Schwab brokerage UTMA.
- Want round-ups continuity if the parent uses Acorns: Acorns Early.
- Want education-specific gift with tax advantages: state 529 plan.
For the legal structure side, see the custodial accounts guide. The Trump Accounts guide covers the federal program for in-window grandkids.
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Frequently asked
- Can grandparents open an investing account for a grandkid?
- Generally, no — the legal custodian on a UTMA must be a parent or legal guardian in most states. Grandparents typically fund an account the parent has already opened. Some states allow grandparent-custodian UTMAs, but the more common path is to gift money to the parent who then deposits it into the kid's account.
- Can grandparents contribute to a grandkid's Trump Account?
- Yes. Trump Account contributions can come from any source — parent, grandparent, friend — as long as the total per-child, per-year stays under the $5,000 federal cap. The federal $1,000 seed and any employer match deposits do not reduce the cap, so a grandparent's contribution can stack alongside the seed and employer match.
- Should grandparents fund a 529 or a UTMA for the grandkid?
- Different goals. A 529 has tax advantages for qualified education expenses but penalties on non-education withdrawals. A UTMA is more flexible — the kid can use the money for anything once they hit the age of majority. Grandparent-owned 529s have the additional benefit of staying off the kid's FAFSA assets — though the rules around FAFSA treatment have evolved.
- Are there gift tax issues with grandparent contributions?
- The annual gift tax exclusion lets each grandparent give each grandchild up to a federal threshold per year without filing a gift tax return. Most grandparent contributions to a kid's investing account stay well under that threshold. For larger gifts, file Form 709 — but a gift tax return doesn't necessarily mean tax owed.
- How do grandparents gift specific stocks to a grandkid?
- Direct stock transfers work through brokerage-to-brokerage transfers (typically a Fidelity or Schwab UTMA). Some apps support contribution by check or wire that the parent then invests. For specific-stock gifting where the grandparent picks the ticker, the brokerage UTMA path is simpler than the consumer-app path.
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Slyce Editorial
Published May 3, 2026 · Updated May 3, 2026