Credit cards

The cheapest capital in America, or the most expensive money in the building

A 0 percent promotional business card is either free capital or 25 percent capital. One number, committed to on day one, decides which. Here is the full arithmetic.

8 minute readUpdated 2026-07-29Written by the Exp Capital desk

A 0 percent promotional business card is either the cheapest capital a small business can get in this country or the most expensive money in the building. Nothing about the card decides which one it becomes. One number decides it, and the owner either commits to that number on day one or never commits to it at all.

That number is the promotional balance divided by the number of promotional months. Write it down before you spend a dollar. Everything else on this page is arithmetic arranged around it.

The one number, worked all the way out

Say you put $30,000 on a card carrying a 12 month 0 percent promotional rate. The payment that actually retires the balance inside the window is $30,000 divided by 12, which is $2,500 a month. Not $2,400. Not whatever the statement asks for. $2,500, twelve times, starting with the first statement and not the fourth.

Now look at what the card asks you for instead. A minimum payment on a revolving balance is typically calculated as 1 to 2 percent of the balance, sometimes with that month's interest and fees added on top. At 2 percent, the first minimum on $30,000 is about $600, and it shrinks every month as the balance shrinks, down to roughly $480 by month twelve. Twelve of those payments total about $6,460.

So the promotion ends with roughly $23,540 still sitting there. At 1 percent minimums it is worse, closer to $26,600. Either way the balance survived the window and the free period did not.

Cumulative interest on the same $30,000 balance over 24 months. The flat line is the balance retired inside the promotional window. The rising line is minimum payments only, at a 24.99 percent revert rate.

Suppose the rate reverts to 24.99 percent. On $23,540 that is about $490 of interest in the first month alone and roughly $5,880 over the following year. A 2 percent minimum on the same balance is about $471. Read those two numbers next to each other. The payment the card asks for is smaller than the interest the card charges.

Most issuers avoid that trap by defining the minimum as a slice of principal plus the month's interest and fees, so the balance does not actually grow. It does not fix anything. Pay minimums built that way for another twelve months and you will have sent roughly $5,570 in interest and moved the balance from $23,540 to about $20,870. A year of payments bought $2,670 of progress.

The same $30,000 on the same card, two decisions made on day one
	Pays $2,500 a month	Pays the minimum
Total paid inside the 12 month promo	$30,000	About $6,460
Balance the day the promo ends	$0	About $23,540
Interest charged in the next 12 months	$0	About $5,570
Balance 24 months after opening	$0	About $20,870
What the capital cost	$0 plus any transfer fee	About $5,570 and still running

When 0 percent beats every other product we broker

There is a real case here, and it is not a small one. We would be doing you a disservice by treating the whole category as a trap, because used correctly this is genuinely the cheapest business capital available in the United States, and it is available to owners who would never clear a bank credit committee. Four conditions have to hold at the same time. Miss one and the product changes character completely.

01The use of funds is self liquidating inside the window
The money buys something that turns back into cash before the promotion ends. Inventory that sells in 90 days. Materials on a job that invoices in 60. If you cannot name the month the cash comes back, you do not have a plan, you have a hope.
02The expense is genuinely card payable
Suppliers, freight, fuel, software, advertising, and most equipment dealers take a card. Rent, payroll, and tax payments usually do not, or they do with a processing fee that eats the whole advantage. Price the fee before you assume the card works.
03The real payment fits the cash flow you already have
$2,500 a month has to come out of what the business produces today, not out of what the purchase is supposed to produce later. A payment that only works if the new revenue arrives on schedule is a forecast wearing a payment schedule.
04Nothing credit sensitive is coming for 12 to 24 months
A large card balance reports as high utilization while you carry it. If a mortgage, an equipment approval, or an SBA file is anywhere on the horizon, understand what utilization does to your file first.

When those four hold, the pricing is not close. The same $30,000 taken as a merchant cash advance at a 1.24 factor rate costs a fixed $7,200. Drawn on a line of credit at 14 percent and paid down evenly over six months, it costs roughly $1,050. Retired inside a 0 percent promotional window, it costs zero plus whatever fee put the balance on the card. That is not an edge on the other products, it is a different category of money.

The same product appears twice on this map. A promotional card is the second cheapest thing on the board when it is retired on time and close to the most expensive when it is not.

Notice that the same product occupies two positions on that map. No other instrument we broker does that. An advance costs what it costs. A term loan costs what it costs. A promotional card is the only thing on the board whose price is set by the borrower rather than the lender, which is exactly why it deserves more thought than the products with fixed pricing, not less.

When it becomes the most expensive money you have

The same card, the same rate, the same paperwork. What changes is the honesty of the plan behind it. In our experience the failures are not caused by owners who did the math and got it wrong. They are caused by owners who never did it, because the offer said 0 percent and 0 percent sounds like a conclusion rather than a condition.

The money is covering a structural loss. If the business loses $8,000 a month, a card does not fix that, it funds four more months of it and adds a balance. The loss is still there at the cliff and now it has interest attached. This is the single most common way a promotional card ends a business instead of carrying one. If that is the situation, read when borrowing is the wrong move before you apply.
The plan is to refinance before the promotion ends. A refinance is an approval you do not have yet, granted by someone you have not met, on a file that will look worse in eleven months than it does today because of the balance you are about to add. Plans that depend on future credit are not plans.
The payment plan is the minimum payment. Anyone paying the minimum on a promotional balance has quietly chosen the 25 percent version of this product and has not noticed yet. The choice happens in month one, not month twelve.
The balance came from several cards opened in the same month. Because the promotions all started together they all end together, which turns a staggered set of obligations into one synchronized cliff. The mechanics and the real cost are laid out in what card stacking actually costs.
Every card carries a personal guarantee. The business name on the card does not change who is liable. See how the guarantee works so you know exactly what you are signing.

The card does not decide whether this is cheap money. The payment does, and you set the payment in month one.

How to price the offer in front of you

Card offers change constantly, so do not learn a product, learn the four questions. Ask them of whatever paperwork is actually on your desk. Any offer worth taking will answer all four in writing before you apply, and an offer that will not answer them has told you something useful about itself.

How many promotional months, counted from what: The clock almost always starts at account opening, not the day the balance lands. Two lost weeks on a 12 month promo turns a $2,500 payment into $2,727.
What is the required self imposed payment: Balance divided by promotional months. If that figure does not fit your monthly cash flow on paper today, the offer is not usable, no matter how good the rate looks.
What is the rate the day after: Usually an index plus a margin, which means it can move while you hold the balance. Multiply the balance you expect to have left by that rate and look at the annual number.
What is the fee to get the money on the card: A purchase costs nothing extra. A transfer typically costs 3 to 5 percent up front. A cash advance costs a fee plus a higher rate with no grace period.

If the money has to come off an existing balance rather than a new purchase, the fee arithmetic is its own subject, and the percentage on the offer is not the cost. Run it through the transfer fee math before you decide. If the money has to arrive as cash rather than a payment to a vendor, a card is usually the wrong instrument entirely and a line of credit is the honest comparison.

Where Exp Capital Solutions fits on this

We are a broker. We do not issue cards, we do not set promotional terms, and we cannot approve anyone for anything. What we can do is price the alternatives against each other with the total cost written out, so the decision is made on arithmetic instead of on the headline rate. Card work is often the version of this conversation where we earn nothing at all: if a promotional card retired inside the window is the cheapest capital for your file, we will say so plainly, point you at the card, and take no commission for it. We would rather be the people you call in three years than the people who put you on a $7,200 advance you did not need.

Questions people actually ask

What payment do I actually need to make on a 0 percent business card?

Take the promotional balance and divide it by the number of promotional months. On $30,000 over 12 months that is $2,500 a month, every month, starting with the first statement. The minimum payment printed on the statement is a different number entirely and it is not designed to retire the balance before the rate reverts.

What happens if I still have a balance when the 0 percent period ends?

With a true 0 percent intro rate, the remaining balance simply starts accruing interest at the revert rate going forward. Nothing is charged retroactively. On roughly $23,500 left at 24.99 percent that is about $490 in the first month and close to $5,880 over a year, which is usually far more than owners expect.

Is a 0 percent card cheaper than a merchant cash advance?

If the balance is retired inside the promotional window, it is not close. A $30,000 advance at a 1.24 factor rate costs a fixed $7,200. The same $30,000 on a promotional card retired on time costs zero plus any transfer fee. The advance wins only when the need is cash, exceeds card limits, or credit will not support a card.

Can I use a 0 percent business card for payroll or rent?

Usually not directly. Payroll providers, landlords, and tax authorities either refuse cards or accept them through a processor that charges a fee, often in the range of 2.5 to 3 percent. That fee is a real cost that eats into the promotional benefit, so price it before assuming the card covers the expense.

Does carrying a large balance on a business card hurt my credit?

It can. Many business cards report to the personal bureaus, and nearly all pull personal credit at application. A high balance reports as high utilization while you carry it, which can move a score meaningfully. Ask the issuer in writing whether the account reports, then check a personal report about 60 days after the first statement.

Should I take a 0 percent card if I plan to refinance the balance later?

That is the plan that most often ends badly. A refinance is an approval you do not have yet, on a file that will look worse in eleven months because of the balance you just added. If the payoff depends on future credit rather than existing cash flow, treat the offer as a 25 percent product and decide on that basis.

How do I find the exact date my promotional rate ends?

It is stated in the promotional terms section of the card agreement, normally as a number of months from account opening rather than from the first transaction. Confirm it in writing when the account opens, put the date in a calendar, and count back three months so there is time to react before the last statement inside the window.

Keep reading

How a 0 percent intro APR worksThe contract mechanics: when the clock starts, and what voids the promotion.Balance transfer fee mathWhy a 4 percent fee is not a 4 percent cost, and the break even point.What card stacking really costsSeveral promotions opened together end together. That is one cliff, not five.Card vs line of creditThe honest comparison when the money needs to arrive as cash.Merchant cash advanceThe same $30,000, priced as a purchase of receivables instead.Total cost of capitalOne method for comparing products that quote in different units.