Renters eligible for protection under the Tenant Protection Act are protected against rent increases that exceed 10% in a one year period or the cost of living + 5%, whichever is lower. If you received a rent increase, you can use the rent calculator to help you determine what the allowable increase is under the law, and if your rent increase exceeds the limit. Eligible renters who got a rent increase in the past 12 months should use the rent calculator, as any increase that exceeds the limit may be rolled back resulting in a rent reduction. Before using this calculator, check your eligibility.