The Personal Inflation Index

Alex Rivera, Wealth Architect at The Wealth Grid

System Drop | August 3, 2026 | The Wealth Grid

Last Wednesday the Fed held rates at 3.5 to 3.75 percent, three people on the committee voted to hike anyway, and the Dow fell 1,153 points before the closing bell. Worst day since April of last year. By dinnertime, every finance channel in America was arguing about the same number: 3.5 percent inflation.

Here is the thing about 3.5 percent. It is not your inflation rate.

It is not mine either. It is nobody's, actually. It is the inflation rate of a statistical household that does not exist, a person assembled out of national averages who buys a specific basket of goods in specific proportions decided by the Bureau of Labor Statistics. That household is useful for setting monetary policy. It is nearly useless for running your life.

And yet almost everyone makes real decisions off it. They ask for a 3 percent raise because inflation is 3.5. They set their withdrawal rate off it. They decide whether they are getting ahead or falling behind off it. They are calibrating their entire financial life against a stranger's grocery list.

Today we fix that. We are going to build your Personal Inflation Index, which is exactly what it sounds like: your own basket, your own weights, your own number. It takes about forty minutes the first time and ten minutes a quarter after that. And when you are done you will know something almost nobody around you knows, which is what prices are actually doing to you specifically.

Grab a coffee. This one is a build.

Let us look at what is actually inside that 3.5 percent, because the spread is genuinely wild right now.

In the most recent reading, gasoline was up 26.7 percent from a year earlier. Airline fares were up 26.5 percent. Beef prices are running up around 14 percent thanks to a cattle supply at decades lows. Apparel is up 3.9 percent. Shelter, which is roughly a third of the whole index, is up 3.3 percent.

Now the other side. Used cars and trucks are down about 2 percent from last year. New vehicle prices are up half a percent, which is basically flat. Core inflation, meaning everything except food and energy, is running at 2.6 percent, which is nearly at the Fed's target.

Read those two paragraphs again and notice what happened. Inside a single 3.5 percent headline, you have categories running at 26 percent and categories running below zero. The average is real. The average is also a lie about almost every individual it describes.

So picture two people. Both earn the same, both live in the same city.

Person one drives 22,000 miles a year for work, flies twice a month, has three teenagers who eat like wolves, and rents an apartment where the lease just reset. Their personal inflation rate is not 3.5 percent. It is somewhere north of 8, and it is eating them alive.

Person two works from home, owns a house with a fixed mortgage locked years ago, drives 4,000 miles a year, cooks most meals, and has not been on a plane since spring. Their personal inflation is running somewhere near 2 percent. They are functionally living in a different economy, and if their income went up 4 percent this year they got a genuine raise.

Same headline. Two completely different realities. One of these people needs to make aggressive moves this month. The other one can relax. The headline number cannot tell them which is which.

You cannot build an index on vibes. You need your real basket, and your real basket is sitting in your bank and card statements right now.

Download the last ninety days of transactions from every account you actually spend from. Checking, every credit card, the one you forgot about. Export to a spreadsheet. Do not clean it up yet, just get it in one place.

Ninety days is the sweet spot. Thirty is too noisy, a single vacation or car repair distorts everything. A full year is more accurate but you will never finish, and a system you abandon is worth nothing. Ninety days, one file, ten minutes.

This is where most people ruin the exercise. They build a beautiful forty category budget, spend three hours on it, and never open it again.

Eight buckets. That is it:

Sort every transaction into one of the eight. Where something is ambiguous, pick one and move on. Precision here matters far less than finishing.

Now total each bucket and turn it into a percentage of your total spend. Those percentages are your weights, and they are the entire point of this exercise. This is your basket, not the government's.

Here is where you get your number. For each of your eight buckets, you need roughly what prices did in that category over the past year. The BLS publishes exactly this, broken out by category, free, every month.

Take the most recent reading and use these as your starting rates: housing around 3.3 percent, utilities and energy services in the mid single digits, groceries around 3, restaurants around 3, transportation heavily dependent on how much you drive because fuel is up over 26, travel high because airfares are up over 26, health care in the low single digits, everything else low.

Then it is one line of math. Multiply each bucket's weight by its rate, and add them up.

Say your weights come out like this: housing 30 percent, utilities 6, groceries 12, restaurants 8, transportation 18, travel 6, health 8, everything else 12. Multiply each by its category rate, sum the results, and you get a single number. That number is your Personal Inflation Index.

For that particular basket, with fuel and airfares running as hot as they are and eighteen percent of spend sitting in transportation, you land somewhere around 6 percent. Not 3.5. Almost double the headline, and nearly triple core.

Now flip it. Take the person with a paid down fixed mortgage, low mileage, and no travel: housing 38 percent, utilities 5, groceries 15, restaurants 6, transportation 8, travel 1, health 12, everything else 15. Same math, and you land near 3 percent. Below the headline.

Two honest numbers, computed the same way, nearly double apart. This is why the exercise is worth forty minutes.

An index you do not act on is trivia. Here is what to do with it.

Move one: reprice your income against your number, not the headline. If your Personal Inflation Index came in at 6 percent and you got a 3 percent raise, you did not get a raise. You took a 3 percent pay cut and someone handed you a certificate for it. That is the conversation to have with your employer, or with your own pricing if you run the business. And run your own prices through the same test. If you have not raised your rates since prices in your input categories ran up 20 plus percent, your margin is quietly gone. Reprice.

Move two: hedge or shrink your single hottest category. Look at your eight buckets and find the one where your weight is high and the inflation rate is high at the same time. That intersection is where inflation is actually hurting you, and it is almost always fixable. Heavy transportation weight with fuel up 26 percent? That is a route consolidation problem, a vehicle problem, or a work from home negotiation, and any of the three beats absorbing it. Heavy travel weight? Book further out and lock rates. You do not need to fix all eight. You need to fix the one that is doing most of the damage.

Move three: get your fixed and variable mix right for a steepening curve. This is the part almost nobody connected to last Wednesday, and it is the most valuable thing in this edition.

When the Fed held, something strange happened underneath. The two year Treasury yield actually fell. But the thirty year yield jumped and closed above 5.2 percent, the highest it has been since 2007. That gap widening is called a steepener, and in plain English it means the bond market shrugged about the next few months and got genuinely worried about the next few decades. Traders are saying they think inflation stays a problem long after this Fed is done talking about it.

If that is right, and the long end is telling you it might be, then every piece of long dated fixed rate debt you carry gets more valuable, and every long dated variable exposure gets more dangerous. Practically: locking a fixed rate today looks better than it did a month ago, and floating balances get more expensive to carry the longer you hold them. Meanwhile, cash and short instruments keep paying you well while the front end stays parked.

You do not have to predict anything. You just have to notice that the long end moved to a two decade high and ask whether your own debt and cash are positioned for that, or for the world of five years ago.

The first build is forty minutes. Every rebuild after that should be ten, and that only happens if you wire it up once.

I run mine through Make.com. One scenario, built once, that fires on the first of every quarter: it pulls my transaction exports into a sheet, drops them into my eight buckets by rule, recalculates the weights, and emails me the new number next to the old one. I do not maintain it. It just shows up.

For the rate side, I keep Galaxy.ai open on CPI release day, which this month is August 12. I paste in the category table and ask for the year over year change in my eight specific buckets, nothing else. It takes about ninety seconds and saves me squinting at a government table for twenty minutes. Running it across a couple of models is also a decent sanity check when a number looks wrong, because it usually means I misread a column, not that the BLS made an error.

The AI is not making a decision here. It is doing data entry. That is genuinely the best use for it in a money system, and people who ask it for predictions instead of clerical work are wasting the tool.

Add it up honestly. Pulling statements, ten minutes. Sorting eight buckets, twenty. The arithmetic, five. Deciding your three moves, another ten or so with a notepad.

Call it forty five minutes, once, and you walk out with a number that tells you whether you are actually getting ahead, which conversation to have about your income, which expense category to attack, and how to think about fixed versus variable debt while the long end sits at a level it has not touched since 2007.

Compare that to the alternative, which is what most people are doing right now: absorbing a headline built for a household that does not exist and quietly falling behind while feeling vaguely confused about why.

I built the whole thing as a single page. The eight buckets are pre labeled, the weight math is already wired so you just drop in your totals, the current category rates are filled in for you from the latest reading, and there is a short decision box at the bottom that turns your number into your three moves.

Want it? Reply with the word INDEX and I will send you The Personal Inflation Index, free. No funnel, no upsell parade, no link hunting. Just reply INDEX and it lands in your inbox.

I opened the doors to our paid community a few weeks ago, and last Wednesday was exactly the kind of day it exists for. While the Dow was shedding a thousand points, the room was not panicking. People were posting their own index numbers, comparing baskets, and arguing about whether the steepener is a real signal or noise. That is a very different experience than watching a red screen alone.

Inside you get my live positioning notes before events like the September meeting, the build sessions where we wire up automations together instead of you fighting a Make screen at midnight, and a group of people who think in systems rather than vibes.

Membership runs 29 dollars a month. The first 100 founding members can lock a lifetime seat for a one time 499 dollars, which means every system we ever build, forever, and no monthly bill again. Those seats do not come back once they are gone. Reply with the word GRID and I will send you the founding member door.

The Fed has one inflation rate to manage and one blunt tool to manage it with. You have one household, one basket, and about forty five minutes.

Your number is not their number. It was never going to be. Go find out what it actually is, and then make the two or three decisions it obviously calls for. That is the entire play.

See you Wednesday, where we are going to run a drill. The Nasdaq just closed more than 10 percent off its high, August and September are historically the two worst months of the year, and the smart move is to rehearse your response now while nothing is on fire.

Alex Rivera, Wealth Architect at The Wealth Grid

Wealth is a system, not a guess.