How long does it take for Health Insurance to kick in?

If I sign up with a health insurance company tonight how long would it take for the policy to kick in?
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It completely depends on the company. I have companies that have specific dates policies go in effect such as the 1st and 15th, then one some that only makes policies effective on the 1st, then some that the effective date will be set once the application is reviewed and policy is funded (paid). If you are signing up tonight, you need to ask whomever you are signing up with, when you should expect the policy to go into effect.
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