What a kids' debit card really costs

Every kids' card leads with one number. Cash App puts $0 on the page. Greenlight opens at $5.99 a month. Acorns Early starts at $8. You line them up, you rank them, and it feels like you've done the comparison. Zero beats $5.99 beats $8. Done.

Except that number is a starting price, not an annual cost. The monthly fee is one of three layers that decide what a card actually takes out of your account over a year, and the other two are the ones that never make the homepage. Here is all three, with the 2026 figures, and the two questions that decide which card is genuinely cheapest for your family.

This is the figure everyone compares, and it's the only one most comparisons cover.

Cash App's new managed account for kids ages 6 to 12, launched in April 2026, is $0 a month with no minimum balance. Greenlight runs $5.99 (Core), $10.98 (Max), $15.98 (Infinity), up to $19.98 (Family Shield), one fee for up to five kids. Acorns Early is $8 a month (Lite) or $12 (through Acorns Gold, which adds kids' investing), one fee for up to four kids.

The trap is comparing tiers that don't match. Greenlight Core has no kids' investing; you're on Max at $10.98 before a child can buy fractional shares. Acorns' investing sits on the $12 Gold tier. So "$5.99 versus $8" only holds if the feature sets are the same. Match the tier to what you actually want, then compare the prices.

This is where the sticker number quietly grows.

Greenlight is the clearest example, and to its credit it publishes these openly, just not on the plan comparison. A custom card with your kid's photo is a one-time $9.99. After your one free replacement per calendar year, each additional lost card is $5.99. Expedited shipping is $24.99. None are mandatory. All are easy to trigger the first time a card goes missing or a kid wants the cool design.

Then there's cash. ATM withdrawals are the fee most parents forget, because they picture the card as tap-to-pay. Greenlight itself charges $0 at the machine, but the ATM operator typically charges $2 to $5 for an out-of-network withdrawal, and Greenlight does not reimburse it. Cash App's standard adult card adds its own $2.50 per withdrawal on top of the operator's surcharge, and stopped reimbursing out-of-network ATM fees in late 2025. Cash App does not publish separate ATM terms for the kids' managed account, so treat cash withdrawals as an open question rather than a settled $0. For a six-year-old who never touches an ATM, it rarely matters. For an older kid who pulls cash, confirm the policy in the app before you assume it's free.

None of this is a scam. These are disclosed, optional, or avoidable fees. The point isn't that a card is hiding something from you. It's that the number on the homepage was never meant to be your annual cost, and knowing the other two layers is how you stop paying for things you don't need. If you're weighing safety alongside price, it's worth understanding how deposit insurance actually works before you decide.

Here's the part that runs backwards from what most parents expect. The fear is that a family card gets expensive as you add children. For these paid options, the opposite is true.

Greenlight's fee covers up to five kids on one plan. Acorns Early's covers up to four. Add a second and a third child and you pay the same subscription, so the cost per kid falls. Greenlight Core for three kids is still $71.88 a year, which is under $24 per child. Cash App's managed accounts are $0 per kid either way. The subscription does not multiply with your family. What multiplies is the one-off fees from layer two, one custom card per kid, one replacement per lost card, which is exactly why layer two matters more than layer three for most families.

Here is the annual subscription cost, the figure the monthly price is standing in for, for one child and for three, on each option's entry tier.

Two things this makes obvious. First, the ranking by subscription doesn't change when you add kids, because all three fees are flat. Second, the moment you want investing, the whole table redraws: Greenlight Max is $131.76 a year, Acorns Gold is $144, and Cash App's managed account doesn't offer kids' investing at all, so "free" stops being an option for that goal. The cheapest card is inseparable from what you're actually buying.

It depends on two things the pricing page can't know: how your kid gets cash, and what you want the card to do.

If you have one or more young kids, you mainly want a card and a savings habit, and cash withdrawals are rare, Cash App's $0 managed account is very hard to beat on price. If your kid pulls cash often, put the ATM reality back into the math before you call it free.

If you want structured chores, allowance automation, and coverage for several kids under one flat fee, Greenlight Core at $71.88 a year does more than its sticker suggests, especially across multiple children.

And if your priority is getting a kid investing early with an automated portfolio, Acorns Gold at $144 is buying a different product. Comparing it to a $0 card is comparing two different jobs.

There is no single cheapest card. There's a cheapest card for how your family will actually use it.

The monthly price tells you where a card starts, not what it costs. Match the tiers before you compare numbers, add the one-off fees you're realistically going to trigger, and count ATM withdrawals honestly. Do that, and the real ranking often looks nothing like the one on the homepage. Cheapest is a function of usage: how many kids, how they get cash, and whether you want investing. Decide those first, then let the price follow.

Trailmarker is an independent guide. We re-verify every card monthly and our rankings are never influenced by commercial relationships. Subscription prices and fees were checked against each provider's official pages in August 2026; providers change their terms without notice, so some figures may have shifted since publication.

This article is general information, not personal financial advice. Confirm current fees on each provider's own site before opening an account.