property tax is not inherently progressive any more than any other tax. Taxes are either flat or progressive. Not having provisions to protect the poor just fucks the poor. Of course what really protects the poor is to just have a large enough standard deduciton to not be pulling income when people are at a level where none of their income is disposable or going further and having a citizens income. Can't be gamed because it applies equally to all. Of course part of graduated system is not to make such a jarring increase that its avoided at all cost. If each stair goes up only one percent then its hard to point to a particular step below as being better than the step above.