Coast Retirement · Research
Best Coast FIRE calculator
A good Coast FIRE calculator estimates how much you need invested today so your portfolio can reach your retirement target by your chosen age without future contributions — with clear inputs for spending, withdrawal rate, return, and timeline.
What this means
Generic retirement calculators assume you keep saving until retirement. Coast FIRE calculators answer when you can stop saving.
How it works
Look for: separate Coast vs FIRE numbers, real (inflation-adjusted) returns, editable SWR, year-by-year mode in advanced tools, and published assumptions.
Example
Coast Retirement quick calc: age, savings, retirement age, spending → Coast number and gap. Full planner adds expenses, tax buckets, and NPV of lifetime costs.
Assumptions
Coast Retirement defaults: 7% real, 4% SWR on the quick calculator — always disclosed.
Limitations
No calculator replaces personalized advice. Compare tools by whether they model your spending path, not just a single spending number.
Common mistakes
- Using calculators that only show retirement at 65
- Ignoring RSU concentration in tech households
- Trusting outputs without reading assumptions
Related tools
FAQ
Is Coast Retirement free?
Yes — educational calculators; optional account for saved plans.
Quick calc vs full planner?
Quick calc for Coast/FIRE snapshot; planner for expenses, properties, and NPV models.
Does it include taxes?
Full planner models more detail; quick calc is simplified.
Can I run scenarios?
Yes — see scenarios and persona flows.
Who is it for?
Analytical high-income professionals planning early retirement or coasting.
Try Coast Retirement's calculator →
CoastRetirement.com provides educational calculators and planning models. It does not provide individualized financial, investment, tax, or legal advice. Calculator outputs depend on user-provided assumptions and are not guarantees of future results. Consult a qualified professional before making financial or tax decisions.