Retirement Gaps, Withdrawal Rates and Sequence Risk

A target fund is a planning device

Dividing desired annual retirement income by a withdrawal-rate assumption gives a useful target framework, not a guaranteed safe amount. Compare that target with the projected fund from current savings and contributions, then keep any gap visible.

Employer contributions change the accumulation rate

Model employee and employer contributions separately so compensation comparisons do not ignore employer money. Country-specific tax relief, qualifying earnings and scheme rules should only be included when they are explicitly verified.

Sequence risk needs a path, not an average

Two return sequences can have the same average yet create different outcomes when withdrawals occur. Stress a poor early sequence, inflation and longer life together rather than relying only on one smooth annual return.

Keep accumulation and drawdown as separate models

The inputs that build a retirement fund are not identical to the inputs that determine how long it may support withdrawals. Contributions, employer payments and accumulation returns belong to the build-up phase; withdrawal level, inflation, retirement duration and return sequence belong to the drawdown phase. Keeping those phases separate makes the source of any gap easier to understand.

Treat a withdrawal rate as a scenario parameter

A withdrawal-rate assumption is not a promise of sustainability. Test the target fund against different retirement lengths, inflation paths and early-return sequences, and keep other income sources separate unless they are explicitly modeled. The useful output is the range of conditions under which the plan changes, not a single percentage presented as universally safe.