A $0 monthly fee is only the beginning.

Start with your last ordinary month

Both official pages recaptured on 2026-09-15 list no monthly maintenance fee and no minimum balance. Capital One 360 Checking also lists no overdraft fees. Ally Spending Account lists no monthly maintenance fees, overdraft fees, or minimum balance, and it operates without branches. That is a useful starting point, not proof that every optional service is free.

List how often you withdraw cash, deposit cash, send wires, write checks, and need in-person help. Then collect the current fee schedule for each account you are considering. This comparison uses Capital One 360 Checking and Ally Spending Account as research examples, not a whole-market ranking. It is US consumer education, not personalized financial advice.

Build a cost estimate you can audit

Use a separate worksheet row for each service: expected uses per year multiplied by the dated fee per use. Add unavoidable recurring charges. If a fee can be waived, model one year when you meet the condition and another when you do not. Do not count an introductory bonus as recurring income. Replace every invented practice figure with the official schedule before you decide.

Work out when zero maintenance still costs more

These are entirely invented accounts, not Capital One or Ally offers. Assume the same activity in each of twelve months: six cash withdrawals. Account A has no maintenance charge, each withdrawal incurs a $4 ATM charge, and all six charges qualify for reimbursement capped at $10 per month. Account B has a $3 monthly maintenance charge and no withdrawal charges for the locations used in this example. Assume no other charges or interest in either account.

Account A costs (6 × $4 − $10) × 12 = $168 for the year. Account B costs $3 × 12 = $36. Under these assumptions, B costs $132 less despite its monthly maintenance fee. If you instead make only two qualifying withdrawals each month, A's $8 of charges is fully reimbursed and its modeled cost is $0; do not subtract the unused $2 of the cap as income.

Now change only the withdrawal count to match your routine, then replace every invented charge and reimbursement condition with the dated official schedule. Check actual locations and eligibility before counting reimbursement. This exercise compares the stated cash costs only; it does not establish which real account you should open or include switching effort, interest or every possible service.

Original monthly ledger: identical activity can cost differently

We ran checking-monthly-cap-rehearsal.mjs locally on September 20, 2026. It reproduces the invented $4 withdrawal charge and $10 monthly reimbursement cap above. Every modeled withdrawal qualifies; there is no maintenance fee, interest, switching cost, or other service charge in this fictional account. These are not Capital One or Ally terms.

Twelve withdrawals spread one per month cost $0 after twelve separate reimbursements of $4. The same twelve withdrawals concentrated in one month cost $38: $48 of charges minus that month's $10 cap. Dividing annual activity by twelve would erase this $38 difference. An unused cap is neither income nor a credit carried into another month.

The runnable source prints all twelve monthly rows and their annual sum. Download it from the resource library and run node checking-monthly-cap-rehearsal.mjs with Node.js 22 or later. No packages or network connection are needed. Change the monthly counts before replacing the fictional charges with a dated schedule you have checked. Do not use an annual average when the reimbursement period is monthly.

Check access before moving payments

Ally’s APY and optional-fee figures above are taken from Ally’s Spending Account page recaptured 2026-09-15. Capital One’s $0 monthly maintenance, no minimums, no overdraft fees, and 70,000+ ATM locations are taken from Capital One’s 360 Checking page the same day. Check an actual nearby ATM, cash-deposit location, and branch if you use one. Keep a record of the source and date.

Before moving a recurring payment, confirm the new account is open and funded, the payment details are correct, and pending transactions in the old account are resolved. Keep your own reconciliation checklist; a comparison page cannot confirm that your transfer succeeded.

What would change the decision?

The downloadable worksheet is a blank decision record plus completed example rows. It does not ask for account numbers, credentials, or identifying details. Keep your current account when the existing fee schedule and nearby access already cover last month’s uses.

• You need a branch: verify the exact Capital One location and available services, or keep your current account.
• You handle cash: verify Ally’s listed cash-add hours and ID rules, or Capital One deposit-taking ATMs.
• You send wires: use Ally’s dated $20 outgoing domestic wire figure only if that is your actual use; confirm Capital One separately.
• You need deposit-insurance information: verify the institution and ownership category using FDIC resources.