Latest / Budgeting for Beginners with Fexingo: Cash Envelopes, Apps, and Simple Money Tracking / How to Budget When You Have No Idea What You Spent Last Month
Transcript
- Lucas: So you want to start a budget. Great. But here's the thing — you have no idea what you actually spent last month. Maybe you're not even sure what you spent last week. Luna: That's me, honestly. I've been there. You know you should budget, but the first step feels like you need a time machine. Lucas: Exactly. And most budgeting advice starts with 'track your spending for a month' — but what if you don't have a month? What if you just need a budget now? Today we're going to do a reverse budget. You start with what you already have: your bank statements, your credit card statements, and your best guess. Luna: I love that — 'reverse budget.' It takes the pressure off having perfect data. So let's say I want to do this. I log into my bank. I see transactions. But they're all jumbled — groceries, gas, random Amazon purchases. Where do I even start? Lucas: First, you pull the last three months of statements — checking and credit cards. Three months is enough to see patterns without getting overwhelmed. Then you scan each transaction and assign a broad category. I recommend no more than eight categories to start: housing, food, transportation, utilities, debt payments, savings, personal care, and 'everything else.' Luna: Eight categories — that's manageable. I think people get stuck because they try to make thirty categories. Like, 'where does my Netflix subscription go? Entertainment or subscriptions?' And then they give up. Lucas: Right. So we're going for broad strokes. And here's the key: don't judge the numbers. You're not fixing your spending yet. You're just collecting data. That grocery bill might be high — just write it down. The goal is accuracy, not shame. Luna: And if you have a lot of cash spending — like, you withdraw $60 from an ATM and you don't remember what you used it for? What then? Lucas: That's the hardest part. For cash, you have two options. One: accept that you'll never know exactly, and put the entire withdrawal in a 'cash' category. Two: try to reconstruct it. Think back — was that the week you bought lunch every day? Did you pay the dog walker? Most people can recover about 70 percent of their cash spending if they sit down with their calendar and think through the week. Luna: I actually did this once, and I realized I was spending about $140 a month at the convenience store near my office. Just coffee and snacks. I had no idea it added up that much. But finding that number was the first step to changing it. Lucas: That's a great example. And $140 a month — that's $1,680 a year. If redirecting that to a savings goal matters to you, now you have a number to work with. But again, you don't have to change it today. You're just seeing the picture. Luna: So once I have my three-month averages for each category, what do I do with that? How do I turn that into a forward-looking budget? Lucas: You build your budget one envelope at a time. Take your average spending in each category, and that becomes your starting budget for next month. But here's the twist: you don't have to do all eight categories at once. Pick the one category where you feel the most friction — the one that's probably too high or that you want to control — and start with just that envelope. Luna: So for me, that would be the convenience store category. I'd put cash in an envelope labeled 'snacks' and only spend from that envelope. And then everything else I just keep doing what I was doing. Lucas: Exactly. It's a minimum viable budget. You don't have to overhaul everything at once. In fact, trying to change eight habits simultaneously is a recipe for burnout. Just change one. And the rest of your spending — you're still tracking it, but you're not restricting it. You're just watching. Luna: That feels doable. And I think for a lot of people, even just one envelope gives you a sense of control. It's not about deprivation — it's about awareness. Lucas: Right. And awareness is the foundation. Once you have one envelope working, you can add another. Maybe after a month, you add a 'groceries' envelope. Then the next month, 'dining out.' Before you know it, you've built a full envelope system — but you built it from a place of understanding your actual habits, not from a template you found online. Luna: I want to go back to the reconstruction step for a second. What if someone's bank statements are a mess — like, they use multiple accounts, or they have a lot of small transactions? Is there a shortcut? Lucas: There is. Use your credit card statements first if you use cards for most purchases. They're usually cleaner — they already categorize things. And for bank accounts, focus on the big recurring debits: rent, utilities, insurance. Those are easy. Then for the rest, look at total outflow minus those big items, and that's your 'variable spending.' You can split that variable number roughly into categories based on your memory. It's okay to estimate. Luna: So the goal isn't perfect — it's 'good enough to start.' I think that's a really important message. I've talked to so many people who never start a budget because they're afraid of getting it wrong. Lucas: And if today's conversation has helped you think about that first step a little differently — maybe you're feeling like you could actually do this — that's exactly the kind of moment where listener support makes a real difference. The show stays ad-free because people like you, who find it useful, decide to chip in at buy me a coffee dot com slash fexingo. Luna: Yeah, it's a really small way to say 'this helped' — and it keeps us going without interrupting the conversation with ads. Lucas: So back to the reverse budget. Once you have your three-month average for that one category you want to change, you set a target. Let's say you were spending $140 a month on convenience store snacks. Maybe you want to cut it to $50. That's a realistic goal. You put $50 cash in an envelope at the start of the month, and that's all you get. Luna: And if you run out of cash in that envelope on the 20th, you're done for the month. No cheating by using your debit card. That's the whole point of the envelope system — it's visual and finite. Lucas: Exactly. And if you have money left over at the end of the month, you can roll it into next month's envelope, or put it into savings, or treat yourself. The key is that you're in control now, not just reacting. Luna: I want to add one thing about digital tools. Some people hate cash. They want to use an app. That can work too, as long as the app gives you the same finite, category-based structure. The important thing is that you're not just looking at a total balance — you're looking at category balances. Lucas: Good point. Whether it's cash envelopes or a digital envelope app, the psychology is the same: you allocate before you spend, and you respect the limit. The tool is secondary. The habit is primary. Luna: So let's say I do this for three months. I've got one envelope working well. I'm feeling good. What's the next step? How do I scale up? Lucas: You add a second envelope. But before you do, look at your three-month average for that category from your reverse budget. Don't guess. Use that number as your starting point, then adjust down by maybe 10 or 20 percent if you want to cut back. The data is your best friend here. Luna: And if you overshoot — like you set the envelope too low and you're constantly running out — that's not failure. That's feedback. You just adjust the amount next month. Lucas: Exactly. Budgeting is not a one-and-done thing. It's a living process. Your spending changes, your income changes, your life changes. The reverse budget method gives you a way to restart anytime you feel lost. Just pull three months of statements and you're back on track. Luna: I think the biggest takeaway for me is that you don't need to know everything to start. You just need to know one thing about your spending. One real number. And from there, you build. Lucas: That's exactly it. Start with one envelope, one number, one month. That's all it takes to go from 'I have no idea where my money goes' to 'I'm in charge of at least this one piece of my financial life.' And that feeling — it's powerful.