How I Used Claude and Monarch to Fix My Budget

Have you ever looked at your budgeting app and thought, "Wait, where did all my money go?" That was me. I've been using Monarch to track my finances for a while, and I definitely thought I had a good handle on things. Turns out, tracking your money and actually understanding it are two very different things.

As someone who works in IT and has a background in project management, I love a good system. So I decided to treat my finances like a project. I connected Claude to my Monarch account and asked it to be my financial adviser for the day. It reviewed my entire year, cleaned up my messy data, and helped me build budgets I can actually stick to.

Here's how it went.

Connecting Claude to Monarch

The setup was so easy. Monarch is available as a connector in Claude, so I added it, signed in to my Monarch account, and approved the access. That's it. No spreadsheets, no exporting CSV files.

Once it's connected, Claude can see your accounts, transactions, recurring charges, cash flow, and budgets. It can also make changes for you, like recategorizing a transaction or adding a note. That was a game-changer for me because Claude didn't just point out problems, it actually fixed them once I gave the okay.

Now, I know what you're thinking: "You gave an AI access to your finances?" I was a little nervous too. But Claude asked before making any changes, explained what it was about to do, and I could see every edit in Monarch afterward. I felt in control the whole time.

Step 1: Hunting down subscriptions

I started small. My first question was: "Based on my subscriptions in Monarch, what can I cancel, and are there any overlaps?"

Claude pulled all my recurring charges and sorted them out for me. It caught things I had completely stopped noticing. I was paying for two website platforms when I only needed one, two cloud storage services, and a car tracker I barely used. There was even a charge from a payment company that I couldn't identify at all. My ego took a little hit on that one.

Step 2: Getting more from my credit cards

Next, I asked how I could get more out of my credit card perks. Claude looked up the current benefits on my cards and compared them to my actual spending. It showed me which perks I was using and which ones I was leaving on the table. I definitely had some unclaimed credits, so this one paid off right away.

Step 3: The full-year review (my data was lying to me)

Then I went for the big one. I asked Claude to review all of my income and spending for the year, find anything that was categorized wrong, and give me a clear picture of where I stand.

This is where things got interesting. Monarch's auto-categorization had been quietly messing up my numbers the whole time. Here's what Claude found:

• A regular bill had switched categories partway through the year, so it looked like I had a brand-new expense.
• Credit card payments were showing up as income, which made it look like I was earning more than I actually was.
• When friends paid me back for trips, it was counted as income instead of reducing what I spent on travel.
• Some transfers between my own accounts were labeled as something else entirely.
• My favorite one: a restaurant got filed under a completely unrelated category just because of a word in its name.

What really impressed me was how Claude handled the confusing ones. It didn't just guess. It fixed the obvious mistakes and then asked me about the rest one at a time. Is this a transfer between your own accounts? Were these friends paying you back? Each question took me a few seconds to answer, and Claude updated the categories and added notes so I'll remember what they were later.

Once my data was cleaned up, I could finally see where my money was really going. Honestly, it was a wake-up call. A few categories were a lot bigger than I realized, and the usual suspects were to blame: travel, eating out, shopping, and entertainment.

Step 4: Building budgets I can actually stick to

With my real numbers in front of me, Claude laid out a plan. It gave me a target for each spending category and showed me how much I'd save each month by hitting those targets. It was honest about which changes would make the biggest difference, and I appreciated that it didn't sugarcoat things.

I also pushed back on part of the plan. Claude flagged a couple of bills as extra spending, but those are ones I pay on purpose. Once I explained that, Claude took them off the list without any back-and-forth.

Here are the budgeting tips I'm keeping:

• Budget for travel by the year, not the month. Trips don't happen evenly. Setting a yearly travel budget with rollover means one big trip won't make it look like you blew your budget.
• Use your credit card credits. Dining and entertainment credits on your cards basically stretch those budgets further, but only if you actually use them.
• Clean up your old budget lines. When Claude checked my existing budget, it found old categories I no longer needed and an income estimate that was way out of date. Fixing those made my budget much more accurate.

One thing to know: Claude could read my budget through Monarch but couldn't edit it. So it gave me the exact changes to make, I updated them in Monarch myself, and then Claude double-checked my work.

What you should know before trying this

• Some accounts might not show up. Depending on how an account connects to Monarch, Claude may not be able to see it. Claude told me right away, so I knew the picture wasn't 100% complete.
• Expect questions. Claude only knows what your data says. It can't always tell a transfer from a refund on its own. Answering those questions is where the real cleanup happens.
• Review before you approve. Claude was careful, but it's still your money. I read every change before saying yes.
• It's a helper, not a financial professional. It's great at analyzing, organizing, and keeping me accountable. For taxes, legal stuff, or big investment decisions, I'd still talk to a real expert.
• Start with a small question. Asking about subscriptions first helped me get comfortable before I handed over my whole year.

Final thoughts

At the end of the day, the biggest win wasn't a savings hack. It was finally being able to trust my own numbers. I had been on autopilot for so long that I never questioned what my categories were telling me. Having a second set of eyes that could read every transaction and ask the right questions changed that in one afternoon.

Now I have clean data, budgets that match how I actually live, and a clear game plan for what needs to change. If you already use Monarch, connecting Claude is definitely worth trying. I did it, and you can too!

Want to try it yourself? You can sign up for Monarch using my referral link, then connect it to Claude and start with your subscriptions like I did.

Disclosure: this is a referral link. If you sign up through it, I may receive a reward from Monarch, and you may get a perk too, depending on their current offer. I only recommend tools I actually use.

Full transparency: I used Claude to help me draft this post, which felt fitting.