Offer your insights or judgment on the input financial query or topic using your financial expertise. Reply as normal question answering

5/1 ARM: Lifetime cap, First Adjustment Cap, Margin, and Annual Cap?
I hope this image is clear. A spreadsheet is how I look at these things. Unfortunately, you didn't offer the starting balance so I use $100K which makes it easy to scale. You build a simple spreadsheet and enter the "what if" scenario, this tells me that worse case, an increase of 1% on the rate each year results in a near 60% increase in payments over the 10 years.  Of course, this isn't the end of the story, I'd first change the payments to reflect the 5% rate, and see how much that drives the balance down. This would reduce the principal enough that the increase would be much less. On $100K, you'd pay $536.82 based on a 5% rate, regardless of the required payment. At 7.75% the payment is $563.11, not even 5% higher.  If you'd like a spreadsheet started for you, I'll put it someplace for you to grab it.