Lean FIRE Annual Expenses: My Real $1,800/Month Life in Vietnam

Table of Contents

1. My Actual Numbers From Last Year
2. What Lean FIRE Annual Expenses Actually Are
3. What Is the Lean FIRE Number?
4. The Spending Breakdown: What the $1,800 Covers
5. What You're Giving Up (Honest)
6. What Vietnam Gives Back
7. Pick Your Battles
8. The Core Math: Your Own Lean FIRE Number
9. Lean FIRE vs. Other FIRE Types
10. Is Lean FIRE Right for You?
11. Frequently Asked Questions

My Actual Numbers From Last Year

I sat down last month and pulled every transaction from the past year living in Vietnam. Not estimates. Actual numbers.

$1,800/month. $21,600/year.

Here's exactly where it went:

At a 4% withdrawal rate, that's a Lean FIRE number of $540,000.

Half a million dollars. That's it. For a real, full life — not a bare-survival existence, but one with good food, a nice apartment, international travel, and enough left over to support people I care about.

I want to be honest with you: am I making sacrifices? In some ways, yes. But Vietnam gives back in ways that are hard to put a price on. More on that below.

What Lean FIRE Annual Expenses Actually Are

The standard definition: Lean FIRE is early retirement on annual expenses of $20,000 to $40,000/year. It's the opposite of Fat FIRE — instead of accumulating a massive portfolio to fund a luxury lifestyle, you reduce the lifestyle enough that a much smaller portfolio can sustain it.

The searcher-friendly answer: Lean FIRE annual expenses for a single person typically run $1,500–$3,300/month, or $18,000–$40,000/year. My actual number is $1,800/month, which puts me at the lower-middle of this range.

What determines where you fall in that range? Not your coffee habit. Four things:

1. Housing — the biggest lever by far
2. Healthcare — brutal in the US, cheap or free abroad
3. Location — domestic vs. international geo-arbitrage changes everything
4. Food culture — places with vibrant street food scenes cost a fraction of supermarkets

Here's the full spending range with real portfolio implications:

My $1,800/month Vietnam life sits at the bold row — $540K needed at 4%, $664K at the safer 3.25% rate.

What Is the Lean FIRE Number?

Your Lean FIRE number = Annual expenses ÷ Withdrawal rate.

Lean FIRE Number = Annual Expenses / Withdrawal Rate

At 4%, that's the same as multiplying your annual spend by 25. At a more conservative 3.25%, multiply by roughly 31.

Mine: $21,600 × 25 = $540,000 at 4%. Or $21,600 × 31 = $669,600 at 3.25% if I want to be more conservative about sequence risk.

Why might you want the more conservative number? Because Lean FIRE portfolios have almost no fat to trim during a market crash. A Fat FIRE retiree losing 40% of a $3M portfolio cuts the travel budget. A Lean FIRE retiree losing 40% of $600K cuts food. There's a meaningful difference in how that feels.

For a stress-test of your withdrawal plan, the Sequence Risk Calculator shows you exactly how different market timing scenarios affect a lean portfolio.

The Spending Breakdown: What the $1,800 Covers

Let me walk through my actual budget line by line, because I think the honest breakdown is more useful than generic advice.

Housing — $375/month

I rent a 1-bedroom apartment in Da Nang. It's not a shoebox. It has a full kitchen, fast WiFi, air conditioning, and a washing machine. In most major US cities, $375 is roughly one week of rent.

The key was spending two weeks finding the right neighbourhood before signing anything. Most tourists pay $600–$900/month for the same square footage because they search in tourist areas. I'm in a local neighbourhood. Same city. Half the price.

Food — $600/month

This is my biggest expense and I do not feel deprived on it at all.

$600/month in Vietnam means: coffee every morning, eating out twice a day when I want to, cooking at home when I feel like it, and still having grocery money left over. A full bowl of pho costs $1.50. A sit-down restaurant meal with drinks is $5–$8. Local markets sell fresh produce for almost nothing.

In contrast, my food spend in the US was closer to $700/month and that was with significant cooking at home, fewer restaurant meals, and considerably worse coffee.

Visa — $100/month

This is the one line item that's purely a Vietnam-specific overhead. Every 3 months I renew my visa. It costs roughly $300–$400 per renewal depending on the type. I've averaged $100/month accounting for those cycles.

This is the "Vietnam tax." I pay it, it's predictable, and it's still cheaper than what I'd spend on commuting costs in a US city.

Travel + Family Support — ~$725/month

This is the most personal category and the one that varies most month-to-month.

I fly back to India to see family a couple of times a year. I take weekend trips around Southeast Asia when the price is right. And I send money to family when it's needed.

This $725 isn't all discretionary travel — some of it is support for people I care about. I include it in my numbers because it's real. Your lean FIRE number should include the things that actually matter to you, not just your survival costs.

What You're Giving Up (Honest)

I said I'm making some sacrifices, so let me name them.

No permanent home base. I don't own property. I don't have a lease longer than 3 months. For some people this would feel unmooring. For me, right now, it doesn't. But I won't pretend it's for everyone.

Distance from family and friends. This is real. The timezone difference to India means calls happen at inconvenient hours. I miss things — weddings, festivals, ordinary Tuesday dinners. No amount of cheap banh mi makes up for that entirely.

Visa uncertainty. Vietnam doesn't have a simple permanent residency path for non-investors. This means I'm always one policy change away from needing to relocate. I keep a contingency plan in my head for that.

US healthcare. If I ever needed to return to the US for an extended period, my healthcare costs would blow up my budget instantly. I have international health insurance that covers emergencies, but this is a genuine long-term question mark.

No career ladder. Lean FIRE means you've stepped off the income escalator. If you want to step back on later, the gap in your resume will matter. I've accepted this.

What Vietnam Gives Back

Now the other side of the ledger.

Time. This is the one that hits you first. I write when I want to write. I don't set an alarm. I go for a 45-minute walk at 10am on a Tuesday because that's when the light is good. You cannot put a dollar amount on that.

Quality of food. I eat better here, at $600/month, than I did spending $700/month in the US. Fresh vegetables from morning markets. Food cooked in front of you. No drive-through garbage. My health has measurably improved.

Community. There's a large expat and digital nomad community here. I've met founders, writers, investors, and retirees from every country. The social life is surprisingly rich.

Weather. I can go outside in January. I know this sounds small. It isn't.

Pace. Vietnamese culture has a different relationship with time than the West. Afternoons slow down. Coffee is taken seriously. Nobody is rushing to their next meeting. After years of sprint culture, this has been genuinely restorative.

Pick Your Battles

Here's the mental model I keep coming back to: pick your battles.

I gave up a permanent home base. I kept world-class food. I gave up convenience. I kept time. I gave up career progression. I kept the ability to decide what each day looks like.

You don't have to make the same trades I did. Lean FIRE isn't one specific lifestyle — it's a framework. The question is which constraints bother you least and which freedoms matter most.

For me: I don't care that much about driving a nice car. I care a lot about controlling my calendar. So trading expensive infrastructure costs for time freedom is a deal I'll take every time.

The people who struggle with Lean FIRE are usually the ones who haven't figured out which battles are worth picking yet. They give up things they actually care about and keep things they don't need. That's when it feels like deprivation.

When you trade the right things, it doesn't feel like sacrifice. It feels like the deal you always wanted but didn't think was available.

The Core Math: Your Own Lean FIRE Number

Whether you're living in Vietnam, Vietnam prices, or a low-cost US city, the math works the same way:

Step 1: Track your actual spending for 3 months (not estimates — actual transactions)

Step 2: Multiply monthly spend × 12 = annual expenses

Step 3: Divide by your withdrawal rate: - At 4%: multiply annual expenses × 25 - At 3.25%: multiply annual expenses × 31 (conservative, recommended for long retirements)

My numbers: $1,800/month → $21,600/year → $540,000 at 4% → $669,600 at 3.25%

Timeline to hit it (starting from $0, investing at 7% real return):

The FIRE Number Calculator will run your specific scenario.

Lean FIRE vs. Other FIRE Types

I personally think of Lean FIRE and Coast FIRE as complementary strategies, not competing ones. If you front-load investments aggressively in your 20s and hit Coast FIRE early, you can then transition to a Lean FIRE lifestyle without any pressure to keep accumulating.

Is Lean FIRE Right for You?

It probably is if: - Location flexibility doesn't scare you - You can identify 2–3 material things you genuinely don't care about (car, house size, status goods) - The thought of controlling your calendar matters more than the thought of earning more - You've lived on less before and didn't find it miserable

It probably isn't if: - You're doing it to "escape" something (Lean FIRE is a destination, not a getaway) - You have kids or plan to — the math changes dramatically (a family of four needs $60K–$75K+, which is no longer Lean FIRE) - You hate uncertainty — visa renewals, healthcare questions, market volatility all require a certain comfort with ambiguity

I'm not going to tell you Lean FIRE is for everyone. It isn't. But I will tell you that $1,800/month in Vietnam is not a life of scarcity. It's a life I chose, built intentionally around what matters to me.

Frequently Asked Questions

What is the typical Lean FIRE annual spending amount?

For a single person in the US, Lean FIRE annual expenses typically run $20,000–$40,000/year. Internationally, particularly in Southeast Asia or parts of Latin America and Eastern Europe, you can run a full Lean FIRE lifestyle on $18,000–$25,000/year. My actual spend in Vietnam was $21,600/year.

What does Lean FIRE mean?

Lean FIRE (Financial Independence, Retire Early) is early retirement on a minimal but intentional budget — typically $20,000–$40,000/year for a single person. Unlike traditional retirement planning, which assumes decades of work, Lean FIRE front-loads financial discipline to exit the workforce 10–30 years early by keeping the required portfolio small.

How do I calculate my Lean FIRE number?

Divide your annual expenses by your target withdrawal rate. At 4%, multiply annual expenses by 25. At a safer 3.25%, multiply by 31. My $21,600/year × 25 = $540,000 target.

Can I do Lean FIRE in the US without moving abroad?

Yes — but the specific lever is housing. US cities like Tulsa, Columbus, Tucson, or rural areas in the South and Midwest have cost structures where $25,000–$35,000/year is genuinely liveable. The international route just accelerates the math significantly.

Is Lean FIRE deprivation?

Only if you're trading things that actually matter to you. I gave up a permanent home and geographic stability — things I don't particularly need right now. I kept great food, full control of my time, and community. That's not deprivation. That's a trade I made with my eyes open.

What is Lean FIRE planning?

Lean FIRE planning has three phases: (1) track your real spending to find your honest minimum, (2) calculate the portfolio required using your withdrawal rate, (3) optimise your savings rate to reach that number in your target timeframe. The FIRE Number Calculator handles the math once you have your spending baseline.

My numbers are real but your numbers will be different. Track your actual spending for 90 days before deciding what your Lean FIRE number actually is — not what you hope it is.