Hi, I am struggling to figure out how to do the math on growing my 401(k). Currently, I have $31,000 in there, and put $18,000 a year in, on a salary of 62k. My employer matches 80% up to 5%, so essentially 4%, or $2,480. However, they only match one time a year and it is in February sometime.

What I was trying to do was take $18,000 / 26 (bi-weekly pay) = $692.31 as a contribution, then compound 26 times a year, assuming 7%.

So would I take $31,000 and multiply by (1 + .07/26) to get the new bi-weekly total, then add $692.31, then repeat 26 times a year? And then how do I add in the $2,480 one time a year?

If my goal is to eventually retire when I pay down a home valued at (today) 200k, about how much would I need in my account to handle the property taxes and maintenance, assuming no other debt? How many years from now would that be?

Thanks!