Bounty
Worth it?

Sunmark CU Student Checking bonus: is $100 worth it?

What it adds over what your cash earns now, tier by tier. Change the rate to yours.

+$100: more than leaving it at 4.15%
With the bonus182500%
Leave it where it is4.15%

Yearly rate on $20 while it's there, bonus included.

The math

Compared with leaving $20 at 4.15%

Bonus
+$100
Interest while it's there
No interest assumed
$0
What it'd earn at home
$20 at 4.15% for 1 day
$0
Extra
+$100
Works out to 182500% a year on that cash, vs 4.15% at home.

Parent/guardian joint owner required if under 18; membership required · Deposit $20 in new money within 1 day. Verified on the bank's page Oct 10, 2026.

See every bonus ranked like this for you

About this bonus

What it takes

  1. 1Parent/guardian joint owner required if under 18; membership required
  2. 2Deposit $20 in new money within 1 day
Ends
No end date listed
Where
New York
Monthly fee
None
Cash stays
About 1 day
Bonus paid
Usually within 60 days of finishing
Verified on the bank's page Oct 10, 2026The bank's offer pageFound via Doctor of Credit

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Questions

Is the Sunmark CU Student Checking bonus worth it?

At 4.15%, about what T-bills or a money market fund pay (as of Oct 12, 2026), the $20 tier adds +$100: the $100 bonus, minus the $0 that cash would have earned in 1 day. At a different rate the answer changes; the calculator on this page works it out for yours.

What are the requirements?

Parent/guardian joint owner required if under 18; membership required; deposit $20 in new money within 1 day. Open to residents of New York.

When does it end?

No end date is listed. The terms were last checked Oct 10, 2026.