Bonus or pay raise- tax?

I've been working with my company for a year now and for my review- i was told that i may take a 1000.00 bonus in one lump sum or 11.57 raise. I'm currently making 10.57. What will they tax more and how much will be taken if i choose the bonus? I plan to leave my job in April due to maternity leave so some say the bonus would be the smarter choice. Thanks.