How to deposit cash into an online bank account, and what it costs

The problem

Online banks have few or no branches, so cash is the awkward case. Each bank picks its own route: a retail partner where a cashier takes your money, its own deposit-taking ATMs, or nothing at all. The limits matter more than the fees for anyone paid partly in cash, because a cap you hit in week three means cash sitting in a drawer.

This is research from official pages read on 29 October 2026, not firsthand testing. We have not opened these accounts or run the features described; disclosures can change, so confirm the live page before you act.

Options compared

From the official pages we read on 29 October 2026.

Worked example: 1,800 dollars of tips a month

A synthetic server earns about 1,800 dollars a month in cash tips, deposited twice a week, so about nine deposits of 200 dollars.

With Capital One 360's retail limits, nine deposits of 200 dollars fit under ten a month and 5,000 dollars. With Ally's Walmart limits, the first five deposits (1,000 dollars) go in and the remaining four have to wait for next month or go through another route. Batching into fewer, larger deposits helps: four deposits of 450 dollars fit Ally's per-transaction and monthly limits, but means carrying more cash for longer.

Decision tree for cash-heavy earners

• Under 1,000 dollars of cash a month and you can batch it into five or fewer trips: any route works; choose the account on its other features.
• Up to about 5,000 dollars a month across ten or fewer trips: a bank with a broad retail network, such as Capital One's listed limits, fits.
• More than ten deposits a month, or more than 5,000 dollars a month: keep a local bank or credit union account for cash, then transfer to the online bank on a schedule.
• Daily cash, such as a market stall or delivery: use a local institution with branch or ATM deposits as your primary cash account; an online account can hold savings.
• Business income: check whether a personal account is appropriate for business deposits before relying on any of these routes.

Before your first deposit

• Confirm the nearest participating store or ATM actually offers the service; Capital One notes some ZIP codes are excluded for 7-Eleven, Stripes and Speedway.
• Bring ID: Ally tells you to bring it, and Capital One says certain merchants and amounts may require it.
• For Ally, generate the barcode at the store; it is valid for 15 minutes.
• Keep the receipt until the deposit posts. Ally says deposits are typically in the account within minutes and after-9-pm-ET deposits post by 3 am ET.
• Confirm any retailer fee in the app before you go; the Capital One page we read did not state one.

What we could not verify

We did not find a retailer fee for Capital One's in-store cash deposits on the page we read, and we did not check whether Capital One accepts money orders through mobile deposit. Limits change; confirm in your bank's app before planning around them.