Increasing tenant rent annually

[Benjamin West]

I'd like to hear specific language about landlords use in leases for raising tenant rent annually and what people think are acceptable percentages.  

[John Powell]

My leases go month to month after the lease expires but at a $100/mo higher rate. This encourages the tenant to re sign a year lease and meals them feel like they are getting a discount if I only raise the rent by $10-20. But also allows them the flexibility to rent for a month or two longer if needed. (I operate in a steady Midwest market)