Block unveiled a new twist on Cash App at Bitcoin 2026 in Las Vegas: the ability to automatically turn peer-to-peer (P2P) payments you receive into bitcoin. In Block’s words, “Starting now, eligible customers can automatically convert peer-to-peer payments they receive into bitcoin” — reframing every incoming payment as “an opportunity to stack bitcoin.” Pair that with Cash App’s 5% Bitcoin Back at Square merchants, and the app is nudging everyday users toward dollar-cost-averaging into BTC without thinking about it.
Here’s exactly what the feature does, how to switch it on, what it costs, and whether auto-stacking actually makes sense for your money.
What “auto-stack” actually does
Normally, when a friend sends you money on Cash App, it lands in your USD Cash balance as dollars. With auto-convert turned on, a portion (or all) of each incoming P2P payment is instead purchased as bitcoin and dropped into your bitcoin balance automatically. You never place the trade by hand — the app does it the moment money arrives.
Think of it as automated dollar-cost averaging funded by your incoming payments rather than a scheduled bank pull. If ten friends split a dinner and send you money, each repayment quietly becomes a small bitcoin buy.
Two important caveats:
- It’s opt-in and adjustable. Auto-convert is off until you enable it, and you control how much of each payment converts. You can turn it off at any time.
- It’s a real purchase. Converting dollars to bitcoin means you now hold a volatile asset. Bitcoin’s price can fall as fast as it rises, so money you may need soon probably shouldn’t be auto-stacked.
How to turn on auto-convert
Cash App tucks bitcoin controls under the bitcoin (₿) tab. The exact wording updates over time, but the path looks like this:
- Update Cash App to the latest version and make sure your account is verified for bitcoin (you’ll need to confirm identity details if you haven’t already).
- Tap the Bitcoin (₿) tab on the home screen.
- Open the settings or “…” menu and look for an option like Auto-convert payments or Convert payments to bitcoin.
- Choose how much of each incoming payment to convert — a percentage or all of it.
- Confirm. Future P2P payments you receive will start stacking bitcoin automatically.
If you don’t see the toggle yet, it may still be rolling out to your account, or you may be in an excluded state. New York is excluded from many Cash App bitcoin promotions.
What it costs
Cash App overhauled its bitcoin pricing in 2026. Automated and recurring buys are the cheap lane:
| How you buy bitcoin | Fee & spread |
|---|---|
| Auto Invest, Round Ups, direct-deposit buys, recurring/automated buys | $0 fees, $0 spread |
| One-off buy over $2,000 | $0 fees, $0 spread |
| One-off buy under $2,000 | ~0.75%–3% fee, plus spread up to ~0.75% |
| Withdraw bitcoin to an external wallet | Network fee (often ~$1–$3, more when congested) |
Because auto-converting incoming payments is an automated buy, it should fall into Cash App’s zero-fee, zero-spread bucket rather than the one-off pricing tier. Fee policies change, so glance at the confirmation screen the first time to see exactly what you’re charged before committing.
The 5% Bitcoin Back sweetener
Alongside auto-stacking, Cash App runs Bitcoin Back: earn 5% back in bitcoin when you pay a Square merchant using bitcoin (directly, or from your Cash balance over the Lightning Network). The reward lands in your bitcoin balance automatically, and you get a push notification when it’s deposited.
The fine print, per Cash App:
- 5% of the qualifying transaction total, paid in bitcoin.
- $30 per month maximum in rewards per customer.
- Offer runs April 22, 2026 through December 31, 2026.
- Eligible U.S. customers, 18+, excluding New York.
- Rewards are treated as a non-taxable rebate of the purchase price.
The $30 monthly cap means Bitcoin Back tops out once you’ve spent about $600 with Square sellers in a month (5% × $600 = $30).
Worked example: a month of stacking
Say you receive $800 in P2P payments over a month and set auto-convert to 25%:
- Auto-converted to bitcoin: $200 (spread across many small automated buys, at $0 fees).
- You spend $600 at Square coffee shops and restaurants using bitcoin: $30 in Bitcoin Back (you hit the cap).
- Total bitcoin stacked that month: $230 in value — $200 of your own money reallocated, plus $30 that’s effectively free.
If bitcoin rises 10% the next month, that stack is worth ~$253; if it falls 10%, ~$207. The $30 rebate cushions you, but the $200 you converted rides the market either way.
Is it worth it?
It can be — if you already want bitcoin exposure. Auto-stacking is a painless way to dollar-cost average, and the fee-free automated buys plus 5% Bitcoin Back are genuinely good economics compared with buying BTC in small one-off chunks (where fees can reach 3%).
It’s not worth it if you’re converting money you’ll need soon. Every dollar you auto-convert becomes a volatile asset. Rent money, bills, and your emergency fund should stay in dollars. A sensible middle ground is converting a small slice — say 5–15% — so a bad month in bitcoin doesn’t sting.
Consider the tax angle too. Buying bitcoin isn’t taxable, but selling or spending it is a taxable event, and you’ll owe on any gains. The 5% reward is a non-taxable rebate when received, but if you later sell that bitcoin at a profit, the gain can still be taxable. If you stack and spend frequently, tracking cost basis gets tedious — Cash App provides tax forms, but keep your own records.
Frequently Asked Questions
Do I have to hold bitcoin to earn 5% Bitcoin Back?
No. You can pay Square merchants straight from your Cash balance over the Lightning Network, and Cash App converts the dollars to bitcoin for the merchant. You still earn the 5% reward in bitcoin, up to $30 per month, through December 31, 2026.
Can I turn auto-convert off after enabling it?
Yes. Auto-convert is opt-in and fully reversible — head back to the Bitcoin tab settings and switch it off or adjust the percentage. Bitcoin already stacked stays in your bitcoin balance; you can sell it back to dollars whenever you like (fees may apply on smaller sells).
Is there a fee to auto-convert incoming payments?
Automated bitcoin buys on Cash App carry $0 fees and $0 spread in 2026, and auto-converting received payments falls into that automated category. Check the first confirmation screen to verify what you’re charged, since pricing can change.
Why don’t I see the feature or the reward?
You may be on an older app version, not yet verified for bitcoin, or in an excluded location. New York is excluded from many Cash App bitcoin promotions, and rollouts happen gradually, so it may simply not have reached your account yet.
The bottom line
Auto-stacking turns Cash App into a hands-off bitcoin-buying machine, and the 5% Bitcoin Back at Square merchants is a rare chance to earn crypto that’s effectively free (up to $30/month). If you want long-term bitcoin exposure, converting a modest slice of incoming payments and paying Square sellers with bitcoin is a low-friction way to build a position. Just don’t auto-convert money you can’t afford to see swing in value, and keep an eye on the taxes when you eventually sell.
WalletWisp is informational and not financial advice. Bitcoin is volatile; verify current fees, limits, and eligibility in the Cash App before you act.
