By Bryce Casson, Founder · Cardocrat · Updated June 2026
The short answer: For a large purchase, the Ink Business Premier is the standout: it earns 2.5% cash back on every purchase of $5,000 or more, the best flat rate in the category. If the purchase is bigger than your credit limit, a no-preset-limit card like the Spark Cash Plus or an Amex business charge card matters more than the rate, and if you want transferable points instead of cash, the Amex Business Platinum earns 1.5x on large purchases.
The rate winner: Ink Business Premier
For pure cash return on a big buy, the Ink Business Premier leads. It earns 2.5% cash back on every purchase of $5,000 or more and 2% on everything else, which beats the flat 2% cards on any large transaction. The catch is that its rewards are cash back only and do not transfer to travel partners, and it carries a $195 fee, so it is a cash play, not a points play.
When the credit limit matters more than the rate
A very large purchase can exceed your credit limit, and that is where no-preset-limit cards win regardless of rate. The Spark Cash Plus has no preset spending limit and earns a flat 2%, and Amex business charge cards like the Business Platinum also flex to large amounts. For a five- or six-figure purchase, simply being able to put it on the card can matter more than the last half percent of rewards.
If you want transferable points instead of cash
Cash is not always the goal. The Amex Business Platinum earns 1.5x Membership Rewards on purchases of $5,000 or more (up to a yearly cap), and the Venture X Business earns 2x transferable miles on everything. At Cardocrat flat 1-cent valuation, 2.5% cash beats 1.5x points, but if you reliably get more than about 1.7 cents per Membership Rewards point on transfers, the Business Platinum can come out ahead on a big spend. See transferable points.
Frequently asked questions
What business card is best for a large purchase?
For cash back, the Ink Business Premier at 2.5% on purchases of $5,000 or more is the strongest flat rate. If the purchase exceeds your credit limit, a no-preset-limit card like the Spark Cash Plus or an Amex business charge card matters more. For transferable points, the Amex Business Platinum earns 1.5x on large purchases.
Is the Ink Business Premier good for big purchases?
Yes. Its 2.5% cash back on every purchase of $5,000 or more is the best flat rate among business cards for large buys, and it has a flexible spending limit. The trade-off is that the rewards are cash back only and do not transfer to travel partners.
Should I use a charge card for a large business purchase?
If the purchase is larger than your credit limit, a no-preset-limit charge card like the Amex Business Platinum or the Spark Cash Plus lets you put it all on one card, which can matter more than squeezing out the highest rate.
Bryce Casson, Founder of Cardocrat. Every card is ranked by what it actually returns, with all points valued at a flat 1 cent and offers verified against issuer sources. About the author.
