How credit card welcome offers really work (and how people miss them)

Updated June 2026 · ~7 min read

A welcome offer (also called a sign-up bonus, or "SUB") is the lump of points, miles, or cash a card issuer gives you for opening a card and spending a set amount within a set time. A typical premium offer looks like this:

"Earn 100,000 points after you spend $6,000 on purchases in the first 6 months."

At common valuations, 100,000 transferable points can be worth around $1,500 or more. That makes the welcome offer, by far, the most valuable thing about a new card in its first year — often worth ten to fifty times more than a single monthly credit. It's also the easiest to lose.

The three numbers that define every offer

• The bonus — what you earn (e.g. 100,000 points, or $300 cash back).
• The minimum spend requirement (MSR) — how much you must spend to qualify (e.g. $6,000).
• The window — how long you have, measured from your account-open date, not the calendar (e.g. 3 months or 6 months).

Miss the window by a single day, or finish a few dollars short, and you typically get nothing. There's rarely a consolation prize.

What spending actually counts

This trips people up constantly. The MSR is measured in net eligible purchases. Most issuers exclude:

• Balance transfers and cash advances
• The card's annual fee and interest charges
• Fees, and often gift-card-like "cash equivalents"
• Some peer-to-peer transfers

And refunds reduce your progress: if you buy a $500 item that counts toward the MSR and later return it, your qualifying spend drops by $500. This is why "I hit the minimum" and "the bonus posted" aren't the same thing until the window math fully settles.

The mistake almost everyone makes

People track the MSR in their head — "I think I'm close" — and either coast into the deadline short, or panic at the end and overspend on things they don't need. Both are expensive. Coasting short forfeits the entire bonus. Panic-spending to hit a $6,000 minimum can easily cost you more than the bonus is worth, especially if it leads to carrying a balance. Interest on a carried balance almost always dwarfs the value of any rewards.

The simple math that secures the bonus

You don't need to overspend. You need pace. Take what's left to spend, divide by days remaining:

required daily spend = (MSR − spend so far) ÷ days left in window

Example: you've spent $2,400 of a $6,000 MSR with 38 days left. You need (6000 − 2400) ÷ 38 ≈ $94.74/day. If your normal spending is already around that level, you're on track and should do nothing unusual. If it's well below, you know early enough to either route a planned purchase (insurance, a utility bill, an upcoming flight) to the card — or accept the bonus isn't worth chasing.

How Cardreap handles this for you

Manually computing net eligible spend against an open-date window every few days is exactly the kind of accounting nobody keeps up with. Cardreap watches it automatically: it isolates the new card's qualifying spend, subtracts exclusions and refunds, and projects whether you'll finish above or below the minimum — alerting you while there's still time to act, never after. And it only nudges toward spending you've already planned.

Track your next welcome offer with Cardreap

This article is general information, not financial advice. Offer terms vary by card and change frequently — confirm the current bonus, minimum spend, and window on the issuer's official website before applying.