By designing your leases with ANNUAL increases (say 3%) -- rather than increases every 5 or so years (or no increases) -- you enjoy more cash flow earlier in the lease term. It also increases the value ("Net Present Value" - NPV ) of the lease to you --and to the investor that purchases your investment property. Don't worry too much about NPV-- just design your investment property lease with ANNUAL increases rather than increases every 5 years or so. Annual increases should be easy to understand and approximate the CPI. "Tweaking" is fun (and profitable.)