A bill to amend the Internal Revenue Code of 1986 to promote retirement savings on behalf of small business employees by making improvements to SIMPLE retirement accounts and easing the transition from a SIMPLE plan to a 401(k) plan, and for other purposes.

SIMPLE Plan Modernization Act This bill modifies the requirements for SIMPLE (Savings Incentive Match Plan for Employees) Individual Retirement Accounts (IRAs), which are tax-favored retirement accounts that small businesses may provide to employees. The bill increases the contribution limits for certain SIMPLE IRAs and modifies the requirements for replacing SIMPLE IRAs with 401(k) plans.