Latest / Budgeting for Beginners with Fexingo: Cash Envelopes, Apps, and Simple Money Tracking / How to Budget When Every Month Is Different
Transcript
- Lucas: So let me paint a picture: it's mid-July 2026, and you just got paid for a big project — great. But last month, you had almost nothing coming in. And next month, you've got a quarterly estimated tax payment due plus your car insurance renewal. If that sounds familiar, this episode is for you. Luna: Because a standard budget — rent, groceries, savings, done — doesn't work when both your income and your expenses are moving targets. Lucas: Exactly. We've talked a lot on this show about the 50-30-20 rule, the cash flow calendar, the envelope system. Those all assume a relatively steady paycheck. But for millions of people — freelancers, gig workers, salespeople on commission, seasonal workers — the numbers change every single month. Luna: So what do you do? Just give up on budgeting entirely? Because I think a lot of people in that boat feel like, 'Well, the budget never works anyway, so why bother?' Lucas: Right, and that's the danger. The fix isn't a more complicated budget — it's actually a simpler one. I call it the 'minimum viable budget.' You only track three numbers: your floor income, your essential spending, and a rolling three-month average for everything else. Luna: Floor income — that's the bare minimum you can expect to earn in a given month, even in a slow period. Lucas: Yes. If you're a freelance graphic designer, maybe your floor is one retainer client at $2,000 a month. That's your baseline. You budget your essentials — rent, utilities, groceries, minimum debt payments — against that floor, not against your best month. Everything above the floor is variable. Luna: So in a good month, you don't automatically spend more. You have room to breathe. Lucas: You allocate the surplus intentionally. Maybe 50 percent goes to savings or debt, 30 percent to variable expenses you've been deferring, and 20 percent to fun. But here's the key: you don't count on that surplus next month. You reset to floor. Luna: That takes discipline. Especially when a big check lands and you want to celebrate. Lucas: It does. But the alternative is a feast or famine cycle where you overspend in good months and then can't cover the basics in lean ones. The minimum viable budget smooths that out. Luna: Let's talk about the expense side. Because even if your income is a roller coaster, some expenses are predictable — rent, subscriptions. But others are lumpy — car repairs, quarterly taxes, annual insurance premiums. Lucas: That's where the rolling three-month average comes in. Instead of trying to predict every irregular expense, you look back at the last three months of actual spending — including those lumpy items — and divide by three. That's your monthly target for variable spending. Luna: So if in the last three months you spent $600, $200, and $1,000 on car-related costs, your average is $600 per month. You set aside $600 each month into a buffer envelope or a separate savings bucket. Lucas: Right. And when the $1,000 repair comes up, you pull from that bucket. You're not scrambling. The bucket absorbs the lumpiness. Luna: I like that. It's like a mini emergency fund, but earmarked for specific variable categories. Lucas: Exactly. You can have a few buckets: one for transportation, one for medical, one for quarterly taxes. The number of buckets depends on your situation. A freelancer might have four or five. Someone with a stable job and just a few irregular expenses might only need one. Luna: And all of this can be done with a simple spreadsheet or even a notebook. You don't need an app, though there are good ones. Lucas: No app required. In fact, I'd argue that for variable-income budgeting, a spreadsheet is better because you can customize the rolling average formulas. Apps often assume a fixed monthly budget. Luna: Speaking of tools — and I know we don't do ad breaks on this show — but if this conversation has helped you think about your own budget differently, and you want to support the show staying ad-free, you can find us at buy me a coffee dot com slash fexingo. No pressure, but it helps us keep doing episodes like this. Lucas: Yeah, we really appreciate that. And honestly, even if you just share the episode with a friend who's struggling with variable income, that helps too. Okay, back to the mechanics. Luna: So we've got floor income, essential spending against that floor, and rolling averages for variable expenses. What about the 50-30-20 rule? Can that still work? Lucas: It can, if you adapt it. Instead of applying it to your actual income each month, you apply it to your floor income. So 50 percent of your floor goes to needs, 30 percent to wants, 20 percent to savings and debt. Any income above the floor — the surplus — you decide consciously where it goes. Luna: That flips the typical advice on its head. Most people hear 'budget 50-30-20 of your take-home pay.' But if your take-home pay varies wildly, that percentage approach doesn't anchor you. Lucas: Exactly. The anchor has to be the floor. Let me give you a real example. A freelance writer I know earns between $3,000 and $7,000 a month. Her floor is $3,000. Her essential spending — rent, utilities, groceries, minimum debt payments — is about $1,800. That's 60 percent of her floor, which is a bit high, but she's working on it. Luna: So she's already exceeding the 50 percent target for needs, but at least she's covering them with the floor. Lucas: Right. The remaining $1,200 from her floor goes to wants and savings. In her best months, she earns an extra $4,000. She puts $2,000 of that into a high-yield savings account for irregular expenses and taxes, $1,200 toward debt, and $800 for fun. She still has a good time, but she's not blowing the whole surplus. Luna: That's a concrete system. What about when a big irregular expense hits in a low-income month? Say she only earns $3,000 that month, but her car needs a $1,000 repair. Lucas: That's where the buffer bucket from the rolling average comes in. She's been putting, say, $200 a month into a car maintenance bucket based on her three-month average. After a few months, she has $600 in there. The remaining $400 she covers from her surplus savings bucket. She doesn't touch her floor budget for essentials. Luna: So the system protects the essentials. That's the whole point. Lucas: Exactly. And if she doesn't have enough in the buckets, she has her emergency fund. But ideally, the buckets prevent you from dipping into the emergency fund for predictable irregular expenses. Luna: Let's talk about the emergency fund specifically. How much should someone with variable income aim for? Lucas: Standard advice is three to six months of expenses. For variable income, I'd lean toward six months of floor expenses. Because if you hit a dry spell, you need that runway. But here's a twist: once you have your buffer buckets set up for irregular expenses, your emergency fund can be smaller because the buckets handle the predictable lumps. Luna: So maybe four months of floor expenses instead of six, as long as the buckets are funded. Lucas: Right. But you have to be honest about what's predictable. A car repair is predictable — it's going to happen eventually. A medical emergency is less predictable. So the emergency fund covers the truly unexpected. Luna: One thing that trips people up is quarterly taxes. If you're self-employed, you have to pay estimated taxes four times a year. That's a big lumpy expense. Lucas: Huge. And it's easy to forget until the deadline. The rolling average works well here. Look at what you paid in taxes over the last four quarters, divide by 12, and set aside that amount each month into a tax bucket. By the time the payment is due, you have the money. Luna: So you're basically smoothing an annual expense into a monthly habit. Lucas: Exactly. And you can do the same for insurance premiums, holiday gifts, any predictable lump. The key is consistency — putting money in the bucket every month, even in a low-income month. Luna: What do you do in a month where your income is below your floor? It happens. Lucas: It does. First, don't panic. You have your emergency fund. But ideally, you've also built some flexibility into your essential spending. Maybe you have a subscription you can pause, or you can eat out less. The goal is to reduce essential spending temporarily without going into debt. If you absolutely must, you dip into the emergency fund, but you treat that as a signal to find more income or cut costs permanently. Luna: So the floor isn't a hard number — it's a target you adjust over time. Lucas: Right. When I work with freelancers, I ask them to recalculate their floor every six months. As their client base grows, the floor may go up. And essential spending can change too. The system evolves. Luna: Let's wrap with one practical takeaway. If someone listening has variable income and wants to start this tomorrow, what's the first step? Lucas: Figure out your floor income. Look at the last twelve months, find the three lowest months, and take the average. That's your floor. Then list your essential monthly expenses. If essentials are more than 80 percent of your floor, you need to either raise your floor or cut essentials. Then set up one bucket for irregular expenses — just one — and start putting a small amount in each month. That's it. Do that for three months before adding more buckets. Luna: Start small, build the habit. That's the minimum viable budget in action. Lucas: Exactly. You don't need a perfect system on day one. You need a system that works for this month — and then you adjust.