What the statement does not tell you
Your credit card statement shows three things — the merchant, the date, and the amount. It does not show:
- Which reward category the transaction fell into.
- What you earned on the transaction at the card's earn rate for that category.
- What you would have earned if you had used a different card you own.
- Whether the merchant is one that triggers a specific bonus on a card you do not own.
- The cumulative gap, in dollars, between your current setup and an optimal one.
Without those four pieces, optimizing rewards is guesswork.
What category breakdown actually looks like
Credit cards do not classify spend the way budgets do. A budget puts a dinner at a restaurant under "food and dining." A credit card classifies the same transaction as "dining" — which earns 3x on the Amex Gold, 4x on the Capital One Savor, 1x on the Chase Freedom Unlimited, 1x on the Capital One Quicksilver. The earning category is what matters for rewards, and it does not always match the budget category.
SavvX uses the categories credit cards use: dining, groceries (U.S. supermarkets specifically, since several cards earn bonuses only at supermarkets and exclude wholesale or convenience), flights direct, hotels direct, travel through portals, gas, transit, online shopping, streaming, drugstores, and a few merchant-specific bonus buckets.
The earning math per transaction
For each transaction, SavvX shows:
- The card you used and its earn rate for the matched category.
- Points or cash back earned at that rate.
- The optimal card you own for the same transaction and what it would have earned.
- The gap — the difference, in dollars, between actual and optimal.
Rolled up to a month or a year, the gap becomes a single number: how much money are you leaving on the table by using the wrong card per category.
The redemption-side math
Earning is half the equation; redemption is the other half. A point earned on a Chase Sapphire Reserve is not worth the same as a point earned on the Chase Freedom Unlimited unless they are pooled. SavvX handles per-card redemption valuation — cash back, travel portal credit, or transfer to airline/hotel partner — and lets you toggle which assumption to use. The same spend can produce different rankings under different redemption modes, and the tool shows you which.
Why this matters beyond curiosity
For a typical household with $40,000-$60,000 in annual spend across a four-card wallet, the gap between current and optimal is usually $400-$1,500 per year. That is the difference between using your default card at every merchant out of habit and matching every category to its best earner. The math is real but invisible without the breakdown.
How SavvX gets the data
Connect accounts read-only through Plaid. SavvX pulls the last 12 months of transactions, classifies each one, applies the earn rate of the card it was charged to, and computes both actual and optimal earnings. Plaid is the standard API used by Venmo, Robinhood, Chime, and most fintechs for read-only account access. SavvX never sees your login credentials and cannot move money.
What this is not
It is not a budgeting tool. SavvX does not project your cash flow, does not categorize spend for tax purposes, and does not replace Mint, Copilot, Monarch, or YNAB. It does one thing — break credit card spend into reward categories and show the earning math. The output complements a budgeting tool rather than replaces it.