<prompt> Human: Im a first time home buyer and am closing on my new home in the coming weeks. Im trying to decide whether I want to put 10 or 20 down and am having trouble figuring out the best equation to make a decision.The details:The purchase price is 83,000 and I intend to pay it off within no more than 10 years. However Im going to take out a 30 year mortgage to secure a low monthly payment in case I wantneed more flexibility with my money This is not a topic of debate, though Im sure some people might have an opinion on it.The house is in nearly move-in ready condition, but will need a new roof within the year. The estimate for the roof is around 5000.The house will not be my primary residence, so I cant roll closing costs into my mortgage. Other move-in expenses will be furniture 10K total when all is said and done which I have the luxury of buying over the next several months to a year, with options to finance.Im a freelancercontractor which means I make good money when I am working, but may go weeks at a time without working. Im currently working full time and have an 85 expectation to continue working full time for at least the next several months.Because Im a freelancer my dad is cosigning the loan Again, this is not a topic of debate, but I plan to refinance after 6-12 months by which time I will have a full time job. EDIT: I will refinance regardless because I want to take my dad off the mortgage ASAP. --The dilemma:If I put 10 down I will have an extra 8000 EDIT: which I can use to fix the roof and buy furniture now, but will have a higher monthly payment 554 - EDIT:which includes PMI - vs 480 and will obviously own 10 less of the house.If I put 20 Ill be left with just my margin of financial comfort basically my emergency fund but will own 10 more of the house and have a lower monthly payment 480 vs 554.The added layer is that I can borrow money from my parents and pay them back, interest free, over the next 3-6 months to get a more comfortable financial cushion in the immediate aftermath of the 20 down purchase.Both of these options seem viable, but Im leaning towards the 10 option because it provides a lot more financial certainty and flexibility today. Of course home buying is a long game, so I want to ensure Im not missing any important factors I should be considering.Assistant: What about PMI?In most cases, if you have more than 80 of the value of the home in the mortgage, you also need to pay PMI which is another monthly cost to add onto that payment every month.Rough estimate, its another probably 35-40 a month for PMI with only 10 down.Human: PMI is already included in the monthly mortgage price.  <response>: But you can have it removed if you put 20 down and save that money. Its one of the best reasons to put at least 20 down since its wasted money that doesnt benefit you at all. 