Yes, from what Wisconsin Bankers Association told us 138.056 does come into play on 1st mortgage HELOC loans, if the rate change causes an increase of the periodic payment other than the final payment you need to give a 15 day prior notice. If it does not increase the periodic payment then you have 30 days after the change to let them know, so your next HELOC statement should take care of that.
Hope this helps.
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