I claimed 9 on my W4. I just got my first check: gross was 1450 and net was 1248.66. I thought I'd get much less taken out. Does this seem correct?

[SteamTrain]

If only SS and Medicare was taken out, then it would be 1450-111= 1339.

A lot depends on what your filing status is (single/married) and what your pay cycle is.  And even then, it may tak a couple pay cycles for Paroll to enact a change to a W-4.
.
Check the tables starting on page 46 here to see what to expect for the income tax withholding portion

<a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-pdf/p15.pdf">https://www.irs.gov/pub/irs-pdf/p15.pdf</a>

[SweetieJean]

Yes, as you must still have Social Security abnd Medicare payroll taxes withheld, as well as any applicable state taxes, employee benefits, etc.  Check with your payroll dept for details.

[SweetieJean]

Some states also have mandatory state disability insurance, unemployment comp, and similar employee withholding.

[sugarbaby2911]

Thanks so much. I'm married and live in NY. The breakdown on my check is: federal income tax: 62.70, ss tax: 89.90, Medicare tax: 21.03, and NY State Worked In: 27.62.

[SweetieJean]

Is the 1450 your weekly gross pay?  Semimonthly?

[SweetieJean]

Those figures appear to be correct for a weekly gross pay of $1450. See page 49 here:
<a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-pdf/p15.pdf">https://www.irs.gov/pub/irs-pdf/p15.pdf</a>