Финанси

Число за финансова независимост

Annual expenses ($)

Safe withdrawal rate (%)

Текущи спестявания

Annual savings ($)

🌐

Detailed Guide Coming Soon

We're working on a comprehensive educational guide for the Financial Independence Number in your language. The content below is shown in English.

What is Financial Independence Number?

▾

Imagine a life where working is completely optional. You wake up, grab a warm cup of coffee, and decide how to spend your day based on what you want to do, not what you have to do. That is the magic of financial independence (FI). Your Financial Independence Number—or your FI Number—is the ultimate target budget that makes this dream a reality. It is the exact size your savings and investment pot needs to be so you can live comfortably off the growth forever, without ever touching your principal balance or needing another paycheck. Think of it like building your own personal money tree. Once the tree grows to a certain height (your FI Number), it drops enough fruit (investment returns) every single year to cover your groceries, rent, travel, and cozy coffee dates. The classic way to find this number is using the 4% rule. This rule of thumb says that if you withdraw 4% of your nest egg each year, your money is highly likely to last at least 30 years or more. To find this sweet spot, you simply take your yearly living costs and multiply them by 25. But life is rarely a one-size-fits-all equation. You might have a side hustle you love, a future pension, or maybe you want to plan for a super long, 50-year retirement that requires a more cautious 3% withdrawal rate. Our calculator does the heavy lifting for you. It lets you plug in your unique monthly spending, adjust for inflation, add in extra income streams, and instantly see your personalized freedom number. It turns a scary, abstract financial goal into a clear, doable roadmap for your life.

DigiCalcs delivers precision-engineered tools for engineers and STEM professionals.

Формула

▾

f(x)

FI Number = Annual Expenses / Safe Withdrawal Rate. At 4% SWR: FI Number = Annual Expenses × 25. At 3.5% (more conservative): Annual Expenses × 28.6. At 3% (very conservative): Annual Expenses × 33.3. Adjusted FI = (Annual Expenses − Guaranteed Income) / Safe Withdrawal Rate. Progress: FI% = (Current Portfolio / FI Number) × 100%. Savings Rate = (Income − Expenses) / Income × 100%.

Variable Legend

▾

Символ	Име	Единица	Описание
Fi Number Calc	Financial Independence Number	—	The total target amount of money you need in your investment portfolio to retire comfortably and live off the returns indefinitely.
Calc	Annual Expenses	—	Your total yearly living costs, including housing, food, healthcare, taxes, and lifestyle spending.
k	Safe Withdrawal Rate (SWR)	—	The percentage of your portfolio you plan to withdraw each year, typically ranging from 3% to 4% depending on how conservative you want to be.

How to Financial Independence Number

▾

1Jot down your current monthly spending and multiply by 12 to get your annual expenses. Don't forget to include fun stuff like vacations, dining out, and hobbies!
2Decide on your Safe Withdrawal Rate (SWR). Use the standard 4% if you want a classic 30-year plan, or drop it to 3% or 3.5% if you want your money to last forever.
3Enter any guaranteed future income you expect, such as Social Security, a rental property, or a pension, which lowers the amount you need to save.
4Let our calculator crunch the numbers to show your personalized FI Number and how close you are to reaching it based on your current savings.
5Play around with the numbers! See how cutting your monthly dining-out budget by just $100 drastically shrinks your final savings goal.

Worked Examples

▾

Example 1

Given:A cozy, minimalist lifestyle with $40,000 in annual expenses.

Резултат:$1,000,000 target portfolio

If you live a simple, happy life spending about $40,000 a year (around $3,333 a month), you multiply that by 25 (using the standard 4% rule). This gives you a neat FI number of exactly $1,000,000. Once your portfolio hits this mark, you can theoretically stop working forever!

Example 2Conservative planner with higher expenses and a safer withdrawal rate

Given:80,000 with 3.5% SWR

Резултат:$2,285,714 target portfolio

Useful for worst-case planning.

Let's say you want a more luxurious lifestyle spending $80,000 annually, and you want to be super safe by withdrawing only 3.5% each year instead of 4%. The math divides $80,000 by 0.035, giving you a target of roughly $2.28 million. It's a higher hill to climb, but it offers incredible peace of mind.

Example 3Budget-conscious family with a consistent side income

Given:50,000 with 4% SWR

Резултат:$1,250,000 target portfolio

Best-case analysis; don't rely on this alone.

If your family spends $60,000 a year, but you make $10,000 from a hobby you love and never want to quit, your portfolio only needs to cover $50,000. Multiplying $50,000 by 25 (the 4% rule) gives you an adjusted FI number of $1,250,000 instead of $1,500,000. That passion project just saved you from needing to hoard an extra $250,000!

Real-World Applications

▾

🏗️

Young professionals planning to retire in their 30s or 40s use this to calculate their exact savings rate targets.

🔬

Empty nesters looking to downsize can calculate how much sooner they can retire by selling a large house.

📊

Freelancers and gig workers use it to find out how much they need to invest to build their own DIY pension.

🏥

Couples use it during financial date nights to align on their joint lifestyle goals and retirement dreams.

Special Cases

▾

The Variable Spending Rollercoaster

To handle this, it's best to use a slightly higher average annual expense estimate in your calculator. Adding a 10% to 15% 'buffer' to your annual budget protects your portfolio from being overdrawn during high-expense years, keeping your retirement plan safely on the tracks.

The Sequence of Returns Risk

This is where a flexible withdrawal strategy comes in handy. If the market takes a dive, cutting back on non-essential spending for a year or two (or working a tiny part-time gig) allows your portfolio to recover without permanent damage.

High Inflation Years

While the standard 4% rule adjusts for average inflation, extreme inflation spikes require you to revisit your calculator. Regularly updating your annual expenses with current-year prices ensures your target FI number stays realistic and secure.

FI/RE Lifestyles — Industry Benchmarks

▾

Metric / Segment	Low	Median	High / Best-in-Class
Lean FIRE (Minimalist)	Under $30k/year expenses	$30k - $40k/year	FI Number: $750k - $1M
Standard FIRE (Comfortable)	Under $50k/year expenses	$50k - $80k/year	FI Number: $1.25M - $2M
Fat FIRE (Luxurious)	Under $100k/year expenses	$100k - $150k/year	FI Number: $2.5M - $3.75M+

Frequently Asked Questions

▾

How do I start calculating my FI number?

The best way to start is by looking closely at your bank statements from the last few months. Add up all your essential bills, groceries, and fun spending to find your true average monthly cost. Multiply that by 12, and you have your baseline annual expenses. Plug that number into our calculator, and you'll instantly see your target!

What is 'Coast FI' versus regular FI?

Coast FI is a fun milestone where you've already saved enough in your retirement accounts that, even if you never add another penny, compounding interest will grow it to your FI number by the time you reach traditional retirement age. This means you can stop saving for the future and only work enough to cover your current, day-to-day living costs. It is an amazing way to downshift your career early without worrying about old age.

How accurate are these calculator results?

Our calculator uses proven historical formulas to give you a highly accurate estimate based on your inputs. However, because the future stock market and inflation rates are unpredictable, you should treat the result as a guiding star rather than an absolute guarantee. Think of it as a living roadmap that you can adjust as your life and the economy evolve.

How often should I check my progress?

Checking your progress once or twice a year is usually the sweet spot. Checking too often can make you stress over daily stock market swings, which don't matter for long-term investing. An annual check-in lets you celebrate your growth, adjust for any new raises or expenses, and stay motivated.

What should I do if my FI number feels impossibly high?

Don't panic if your target number looks intimidating at first glance! Remember, financial independence is a journey, and every dollar you save buys you a little more freedom. You can lower your target by finding ways to trim recurring expenses, building a small side stream of income, or planning to do a bit of enjoyable work in retirement. Small shifts in your daily habits make a massive difference over time.

Common Mistakes to Avoid

▾

!Forgetting to factor in health insurance and medical costs, which can skyrocket once you leave a corporate job.
!Underestimating taxes on your investment withdrawals—remember, Uncle Sam still wants his cut in retirement!
!Using an unrealistic safe withdrawal rate like 5% or 6% during long-term market downturns.
!Failing to track miscellaneous annual expenses like car insurance, home maintenance, and holiday gifts.

💡

Pro Tip

Focus on the expense side of the equation first! Every $100 you cut from your recurring monthly expenses doesn't just save you $100 today—it actually reduces the total amount you need to save for retirement by $30,000. It's a double-win for your financial freedom timeline.

⭐

Did you know?

Did you know that packing your lunch instead of ordering takeout can actually shave months off your retirement date? If you save just $100 a month on lunch and invest it, that money compounds. But even better, because you've lowered your daily living expenses by $100 a month ($1,200 a year), your ultimate FI Number instantly shrinks by a whopping $30,000!

References

📖Difficulty:Intermediate

Само за информационни цели. Този инструмент не представлява финансов съвет. Консултирайте се с квалифициран финансов съветник преди да вземате инвестиционни или финансови решения.

Deep Dive

Read the full guide on how to use this calculator effectively

Прочети повече →

Accuracy-checked

Reviewed October 2026

Our methodology

Получавайте седмични съвети по математика

Присъединете се към 12 000+ абонати, които получават съвети за калкулатор всяка седмица.

🔒

100% Безплатно

Без регистрация

✓

Точно

Проверени формули

⚡

Мигновено

Резултати при въвеждане

📱

Мобилно готово

Всички устройства