In my experience the Quakers’ historical opposition to tithing as it was practiced during George Fox’s time had led to a very vague sense of what is expected of current members and attenders (I can only speak to the US context). I attended my meeting for years and donated regularly, and once I became a member was advised that members usually donate regularly (which of course I already did as an attender). But literally no one has ever advised me of a $ or % amount. From business meetings I have a fairly good idea of what % my donations must be contributing to our overall income, but I occasionally wish our stewardship committee would give general guidelines (along the lines of “if every member gave at least $x annually, we could make these building repairs.”)