Year-end is the best time to sanity-check your FIRE plan because you can anchor it on real numbers: actual spending, actual contributions, and the returns you actually experienced. A good review does not need a complex spreadsheet—it needs a few conservative assumptions, a stress test, and a simple set of targets for next year.
If you do one thing: run a base case and a downside case, then decide what lever you will improve first (spending, contributions, or returns).
Step 1: lock in your annual spending baseline
FIRE planning breaks down when spending is vague. Before you touch returns or withdrawal rules, define:
- your annual baseline spending (12-month total),
- your non-negotiables (housing, food, insurance),
- your variable bucket (travel, lifestyle),
- any one-off events you should not extrapolate (moving, medical, renovations).
If you want a working shortcut: use the baseline as your “floor” and the baseline + variable bucket as your “ceiling”. Your plan should survive the floor and remain realistic under the ceiling.
Step 2: confirm your savings engine (rate and contributions)
Your savings rate is the lever you control the most. Year-end review is where you answer:
- What was your actual savings rate over the last 12 months?
- Did it depend on one-off income or temporary expense cuts?
- Can you repeat it for another year without burning out?
Model this in the FIRE savings-rate calculator and write down one target that is both realistic and meaningful (for many people that is a 3–8 percentage-point improvement, not a dramatic leap).
Step 3: stress-test return assumptions (base vs downside)
Most FIRE plans fail on optimism. The fix is simple: keep two scenarios.
- Base case: a conservative, inflation-aware return you can defend.
- Downside case: trim the base by 1.5–2 percentage points and rerun.
Run both scenarios in the FIRE calculator. If the downside case collapses your plan, your job is not to “find higher returns”—it is to strengthen the plan with higher contributions, a lower spending floor, or a longer runway.
Step 4: pick a withdrawal rule you can execute
A withdrawal rule is not a theory; it is a behavior you can follow in a bad year. Common approaches:
- Fixed initial rate (3.5–4%) with inflation adjustments.
- Guardrails: a floor and ceiling that adjusts spending to markets.
- Dividend-first + small sell-down: dividends cover most spending, sales top up the rest.
The practical question is: what will you do if markets drop 25–35% early in retirement? If your answer is “I don’t know”, you need guardrails.
Step 5: convert the review into next-year targets
Turn the review into three concrete numbers for next year:
- Monthly contribution target (and an “easy” minimum you can always hit).
- Annual spending ceiling (the number you refuse to exceed).
- A plan for volatility (cash buffer, rebalancing rule, or guardrails).
To make it tangible, run a fast check in the FIRE Lightning calculator and save the base and downside cases as your reference.
Next steps
- Run a base and downside timeline in the FIRE calculator and write down the delta in years and required capital.
- Set next-year contribution targets in the FIRE savings-rate calculator and pick one lever to improve first.
- Validate the “quick reality check” in the FIRE Lightning calculator and keep it as your quarterly review template.
Summary
- Year-end FIRE review should start with real spending, not return assumptions.
- Keep two scenarios (base + downside) to avoid optimism bias.
- Choose a withdrawal rule you can follow under stress; guardrails beat wishful thinking.
- Convert the review into three concrete targets: contributions, spending ceiling, volatility plan.
- Use Dywidenciarz calculators to make the plan measurable and easy to revisit quarterly.