The order matters because you cannot sort what is still buried in the card slots, and you cannot reorder cards until the paper is gone. Dumping everything out first gives you one pile to judge; clearing the receipts shrinks it; only then does arranging cards actually change anything. The last step is the check that tells you whether it worked.
Step 1: Empty everything onto one surface
Start by turning the wallet upside down over a table or tray, then shake the coin pocket, check behind the card slots and run a thumb through the fold of the bill compartment. You are not sorting yet, just exposing everything at once so step 2 has a full pile to work from instead of a partial one. Expect more than you think: a hotel key card, a business card from a stranger, a gift card with two dollars left, three cards you forgot you had. Doing this over the sofa or pulling items out one at a time keeps half the contents hidden in the lining. Count the cards as you go and say the number out loud. Ten minutes here decides whether the rest of this strip works.
Step 2: Bin the receipts and dead coupons
Receipts and coupons are the bulk, not the cards, which is why this comes before any reordering. Work through the pile with two destinations only: the bin, or a photograph on your phone. A receipt only earns a photo if it covers a possible return or an expense claim, and returns are usually useless after 30 days anyway. Coupons get judged by today's date, not by the day you picked them up; an expired one is not a maybe. Anything with a balance, like a gift card, stays on the table for step 3 rather than going back in the fold. Restacking the whole pile neatly to sort later is the trap here, because a tidy stack still occupies the same space and step 3 will have nothing new to organize.
Step 3: Order cards by how often you use them
Ordering only becomes possible once the pile is genuinely smaller, which is what step 2 bought you. Put your ID in the first clear window facing outward so it can be read without being pulled free, then your daily card directly behind it, then the backup card. Most people file by importance, but frequency is the better rule: the card you touch twenty times a week should sit closest to your thumb, and the one you use twice a year can live at the back. Loyalty cards, transit passes and gift cards go behind the payment cards or stay at home entirely. Shoving two cards into a single slot is how a slim wallet gets fat again, and it also wears the slot out. Finish by closing the wallet and checking it shuts flat.
Step 4: Feel the difference in your pocket
This last step is the part that keeps the first three from undoing themselves, because a slim wallet you never notice is a slim wallet you will refill without thinking. Slide it into the pocket you actually carry it in, sit down, walk a block. The difference is pressure and bulk against your leg, not appearance. If it still digs in, the leftover weight is cards rather than paper, which means the next move is picking one card to leave in a drawer, not hunting for more receipts to bin. Skipping this check is common: people admire the wallet on the table, feel nothing, and by the following week the fold is full again. Keep a small bin or tray where you emptied it in step 1 so the next batch has somewhere to go.
A reminder on your phone vanishes the second you dismiss it and leaves nothing behind; a paper strip taped to the closet door stays visible until the last line is cut, and it gets shorter every time you finish a step. Ten minutes with a bin and a table is a small kindness to the version of you who sits down with a full wallet in their back pocket.