Miles vs Cashback

How Credit Card Sign-Up Bonuses Really Work

Welcome offers can be worth a lot — or a trap. Here's how credit card sign-up bonuses work in Singapore, the conditions to watch, and how to avoid the catches.

By The Miles vs Cashback Editors · Published 16 Jun 2026 · 2 min read

The flashiest line in any credit-card advert is the welcome offer: a big chunk of miles or cashback just for signing up. Sometimes it's genuinely great value. Sometimes it's a trap that costs more than it gives. Here's how sign-up bonuses really work in Singapore, and how to come out ahead.

What a sign-up bonus is

A sign-up bonus (or welcome offer) is a one-time reward — miles, cashback, vouchers, or a gift — for new cardholders who meet certain conditions. It's a customer-acquisition tool: banks pay to win you over, betting you'll stay and keep spending.

The conditions that almost always apply

  • Minimum spend in a window. You usually must spend a set amount within the first few months to unlock the bonus.
  • New-customer rules. Many offers are only for customers who haven't held that card — or any card from the bank — recently.
  • An annual fee may apply in the first year, which can offset part of the reward.

Read these before you apply — the bonus is only as good as your ability to meet the conditions cleanly.

The catches to watch

  • Don't let the minimum spend tempt you into overspending. Only count spending you'd do anyway; manufacturing purchases to hit a target usually destroys the value.
  • Check your eligibility. If you held the card recently you may not qualify, and applying wastes a credit check.
  • Mind the fee-versus-bonus maths. A first-year fee can quietly eat a chunk of the reward.
  • Expect a wait. Bonuses can take weeks or even months to post after you qualify.

Are they worth chasing?

A sign-up bonus is worth it when you'd hit the minimum spend through normal life and you value the reward. It's not worth it if it nudges you to overspend or — worst of all — to carry a balance, because card interest erases any bonus many times over (here's why).

How to approach them sensibly

  • Time an application around a planned big expense (an insurance premium, a flight, a planned purchase) so you hit the minimum naturally.
  • Never manufacture spend just to qualify.
  • Read the eligibility rules first.
  • Pay in full, always — see choosing your first card for the habits that make any card worthwhile.

A word on "churning"

Some people open cards repeatedly to harvest bonuses — "churning." It can work, but it's advanced: it demands organisation, affects your other credit applications, and runs into eligibility limits. Beginners are far better off mastering one or two cards first.

The takeaway

A sign-up bonus is a real perk when it fits spending you'd do anyway and you pay in full. Treat the minimum spend as a condition to meet calmly, not a target to chase — and never let a welcome offer talk you into debt.

Frequently asked questions

What is a credit card sign-up bonus?
It's a one-time reward — miles, cashback or a gift — for new cardholders who meet set conditions, usually a minimum spend within the first few months. Banks use it to attract new customers.
Do I have to spend a minimum to get it?
Almost always, yes. Most offers require a minimum spend within a set window. Only count spending you'd do anyway; overspending to qualify usually wipes out the value.
Can I get the bonus more than once?
Often not. Many offers are limited to customers who haven't held that card, or any card from the bank, recently. Check the eligibility rules before applying.
When does the bonus get credited?
It varies, and it can take several weeks or even months after you meet the conditions. Don't expect it instantly, and keep track of whether you've qualified.
Are sign-up bonuses worth it?
They're worth it if you'd meet the minimum spend naturally and value the reward. They're not worth it if they push you to overspend or carry a balance, since interest costs far outweigh any bonus.

Sources

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