What a Retirement Income Gap Means
A retirement income gap is simply the difference between what your CalSTRS pension pays each month and what you actually need to cover your expenses in retirement. It is not a flaw in the pension system - it is a planning question that is personal to your situation.
The 54% Concept
On average, a CalSTRS pension replaces roughly 54% of a teacher's final salary. For some teachers, that is enough. For others - particularly those without a paid-off home, with dependents, or with retirement lifestyle goals beyond their working-year budget - it may leave a noticeable shortfall.
Why Pension Income May Not Cover Everything
Your pension is a guaranteed, lifelong payment, which is a real strength. But it is calculated against your working salary, not your retirement expenses. Healthcare costs, travel, helping family, or simply maintaining your current lifestyle can add up to more than 54% of your old paycheck.
Why Early Review Creates More Options
The earlier in your career you understand your projected gap, the more time you have to address it - through supplemental savings like a 403(b), through timing decisions around your retirement age, or simply through adjusted expectations. Teachers who look at this question close to retirement have fewer paths available, not because anything went wrong, but because time itself is a planning tool.
There Is No One "Right" Gap
Some teachers have no gap at all. Others have a significant one. Neither is a verdict - it is simply useful information to have before you make permanent decisions like your benefit election at retirement.