The 0% APR Float Strategy: How One Business Card Earns Me 7% Back on Everything
By Nathaniel Booth | Updated June 21, 2026
A handful of business credit cards earn strong flat rewards and give you 0% APR on purchases for the first 12 months. Put your spending on one, leave your actual cash in a high-yield account earning about 4.5%, and pay the card off right before the 0% ends. You earn the rewards, you earn the interest, and the bank floats your spending for free. Done right — welcome bonus + flat rewards + float interest — it works out to about 7% back on everything, and you can rotate a stable of these cards to keep it running almost indefinitely.
Why a flat 2% card becomes "7% back"
Take the Amex Blue Business Plus: 2x Membership Rewards on every purchase (up to $50k/year), no annual fee, and 0% APR for 12 months. The 7% is three things stacked: the welcome bonus spread across your spend, 2x points on everything (worth ~2% as cash, more via transfer partners), and the float — instead of paying the card monthly, you keep that cash in a 4.5% account for up to a year and pocket the interest.
Real example: on $12,282 of spend, that is about 50,000 points (including the bonus) plus ~$430 of float interest = $926, or 7.54% — roughly 7.0% after the tax on the interest. Even at $3,000 of spend with the standard 15,000-point bonus, it still lands near 7%.
How the 0% float actually works
- Spend normally on the card.
- Set autopay to the minimum (usually ~1% of the balance or $40).
- Keep your real cash in a high-yield savings account earning ~4.5% — the bank is floating your purchases interest-free.
- Mark your calendar for the 0% end date (it is on the bottom of every statement).
- Pay the balance in full a few days before that date.
Why business cards (and why it does not hurt your credit)
This works best with business cards for two reasons. First, Amex soft-pulls you for a new business card once you have a relationship — so every ~6 months you can re-apply for the Blue Business Plus or Blue Business Cash, reset the 0% clock, and grab a fresh welcome bonus without a hard inquiry. Second, most business cards do not report to your personal credit, so carrying a large balance during the float does not dent your score.
Two exceptions to know: Capital One business cards report to personal credit (and no longer offer a 0% intro) — do not use them for this. And many small regional or credit-union business cards do not disclose their reporting — verify before you lean on one.
The float stable (verified 0% on purchases, 2026)
| Card | Earn | 0% Intro | Bonus |
|---|---|---|---|
| Amex Blue Business Plus | 2x MR everywhere (≤$50k/yr) | 12 mo | 15k–75k MR |
| Amex Blue Business Cash | 2% cash everywhere (≤$50k/yr) | 12 mo | up to $500 |
| Chase Ink Business Cash | 5% office/internet/phone | 12 mo | 100k |
| Chase Ink Business Unlimited | 1.5% flat | 12 mo | 100k |
| U.S. Bank Triple Cash | 3% gas/dining/cell/office | 12 mo | $750 |
| Wells Fargo Signify | 2% flat | 12 mo | $500 |
Want permanent category multipliers instead of rotating quarterly cards? Chase Ink Cash (5% office/internet/phone) and U.S. Bank Triple Cash (3%) are also on 0% float — they replace your Freedom/Discover quarters with categories that never rotate. Beyond these, a long tail of regional and credit-union business cards carry 0% windows you can stack on the end of the rotation — those earn little, but they keep the float going.
Always confirm the current 0% term and whether the card reports to personal credit before applying.
Do not do this if…
- You cannot pay the balance in full before the 0% ends — the interest will erase everything.
- You do not have a high-yield savings account to hold the float.
- You carry credit-card debt or struggle to budget — this gives the bank money, not you.
Frequently Asked Questions
Do I need a business to get these cards?
You qualify as a sole proprietor if you earn any side income — apply with your SSN. See our business bank account guide for the full explanation.
Does carrying a balance during the 0% period hurt my credit?
With Amex, Chase, and U.S. Bank business cards, the balance does not report to personal credit, so it does not affect your score. Capital One business cards DO report to personal credit — avoid those for this strategy.
Is 7% back really sustainable?
The float-interest portion shrinks as you approach the payoff date, which is why you reset with a fresh card roughly every 6 months. Across a full cycle it averages about 7%.
What do I do when the 0% period ends?
Pay the balance in full from the cash you parked in savings, then move your spend to the next card whose 0% window is open.
Are the rewards and float interest taxable?
Sign-up bonuses on spend generally are not; the savings-account interest is (1099-INT). Set aside about 15%.
Once you have four or five cards going, each with a different 0% end-date, you cannot track it in your head — and missing one means 25% interest in a single month. The free Stacks OS tracker watches every card's 0% window so you never miss one. Pro tells you which card to open next and the exact order to keep the float running.
Try Stacks OS →