I believe that you should give 10% but if you can't then give what your able to and God will bless you for it...He understands that some people can't literrally afford too...And its not always about money its about helping your fellow neighbor or in your community to make it a better and safer place for you and your family to live...Paying tithes can be in helping your local church cut the grass, help clean, a number of things it is all about putting forth the effort...