Get same date next year
Generic formula
=EDATE(date,12)
Related formulas
Get same date next month
Explanation
To get the same date next year from a given date, you can use the EDATE function.
In the example shown, the formula in cell B5 is:
=EDATE(B5,12)
How this formula works
EDATE can get the "same date" in the future or past, based on the number of months supplied. When 12 is given for months, EDATE gets the same date next year.
Same date in previous year
To get the same date in a previous month, use -12:
=EDATE(date,-12) // prior year