Does raising your credit limit improve your credit score?

The more things you try to do to raise your credit score - the lower you will drop it.

If you apply for a loan or credit card - your score drops because of a hard inquiry.

If you apply for an increase in your current credit limit on a card you already have - it still creates an inquiry and drops your score.

If your utilization is already only 3% - then you are well below the amount that has any affect on your score.  Anything under 10% is rated as good.  Changing from 3% to 1% changes nothing.

Your score will improve more by doing nothing at all.  (Just keep all bills paid on time.  Make sure no debts go into collections)

TIME - time is the factor you can't change.  It takes TIME to build a good credit score.  It takes an average of two years of on time payments and responsible usage of the credit you do have to make any kind of significant increase in your credit score.

I seen from your comments that you would like a home mortgage so during the time you are working on building your score you also need to be working on a savings account for a down payment.

Maybe, but not significantly.  Anything under 10% is lower enough.  Dropping from 3% to 1% won't help.

no and no.............................

Nobody has a 202 credit score. Even if you have a 550, you are not getting a mortgage for years no matter what you do.

Your credit score can improve your credit limit...

But your credit limit can lower your credit score.

In other words, don't worry about the numbers -- it's how well you can afford to pay your debts that matters most in getting credit and loans.

Quit worrying about your number and live your life.  Use credit wisely.  Only charge what you can PAY IN FULL when the bill comes.