Caholmes

your formula does not take the day into account but only months, therefore creating a result which might not be what the OP needs. Test it for March 31st and you will see that it returns 1 month, although it's less than one month. ( 19 days today)

If one is only concerned about the number of months gives the number of entire months between two dates

But then again, as is common with dates, the OP did not specify what he wants exactly

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