=RATE(3;-10;900;0;1;0) and RATE(3;-10;900;0;2;0) do not return the same result, whereas Excel does (-89%).
ODFF correction submitted to the ODF-TC https://lists.oasis-open.org/archives/office-comment/201607/msg00010.html
Winfried Donkers committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/core/commit/?id=1ca11b55aecb18f9dcca1e9678910dc2e7593623 tdf#101166 treat argument PayType for Calc function RATE as boolean. It will be available in 5.3.0. The patch should be included in the daily builds available at http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: http://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.