How to Accept QR Code Payments at Flea Markets and Garage Sales

Individuals Can Accept QR Code Payments

Introducing QR code payments at flea markets and garage sales lets you sell to buyers without cash. According to figures compiled by the Ministry of Economy, Trade and Industry, Japan's cashless payment ratio passed 40% in 2024. For a buyer who is not carrying much cash, the single line "cash only" can be reason enough to pass on a purchase. Using person-to-person transfer features on PayPay, Rakuten Pay, or Merpay requires no special equipment or merchant agreements.

The simplest method is displaying your QR code via PayPay's "Send/Receive" feature for buyers to scan. Person-to-person transfers are also fee-free. Note that this is a "person-to-person transfer," not a formal "payment transaction." Keep transfer records for sales tracking and tax filing purposes.

Preparing and Displaying QR Codes

Prepare in advance for smooth transactions on the day:

• Save your PayPay "My Code" as a screenshot and print at A4 size. Laminating protects against outdoor dirt and rain
• Add signage like "PayPay accepted" or "Cashless OK" in large, readable text
• Fully charge your smartphone (bring a portable battery too)
• Prepare cash for change as backup

If accepting multiple payment methods, displaying each QR code side by side is helpful. If you have two of the major services ready, the chance of overlapping with the app your buyer normally uses goes up. Note that the name of the transfer feature and the steps for receiving money differ from app to app, so try the procedure for the service you plan to use once in advance.

Tips to Prevent Issues

Tips to prevent QR code payment troubles:

• Verify transfers: Always confirm receipt in your own app before handing over items. Viewing the buyer's screen alone does not count as confirmation. A completed-transfer screen can be saved as an image and edited, so even if you are shown an image with the amount or the date and time swapped out, nothing appears in the recipient's own history. You cannot tell the real from the fake by the screen alone
• Connectivity: Outdoor events may have unstable signal. Check venue reception in advance and bring a pocket Wi-Fi if needed
• Amount confirmation: State the amount verbally and verify on the buyer's screen before they send. Digit errors are surprisingly common

Supporting both cash and cashless is the best strategy to avoid missed sales.

Using QR Codes on Price Tags

Attaching QR codes to price tags that link to product details is another useful approach. For used electronics, linking to pages with model numbers, purchase dates, and working condition helps buyers make confident decisions. For brand items, showing purchase receipts or warranty photos builds trust.

Creating a product list in Google Sheets and converting each row's link to a QR code is straightforward. Price reductions only require updating the spreadsheet without recreating QR codes. For larger flea markets (50+ items), this also streamlines inventory management.

Handling price haggling and unsold items

Haggling on the spot is part of what makes a flea market or garage sale enjoyable. The awkward case is when the discount is agreed after the buyer has already sent the money. Person-to-person transfers have no refund or cancellation mechanism of the kind built into store payments. As a rule, you settle the difference by sending it back to the buyer from your side. Some services let a transfer be cancelled while it is still unreceived, but neither the name of the operation nor the conditions are uniform. For an item whose price is likely to move, reading the amount out loud and having the buyer confirm it before sending saves far more trouble afterwards.

If you send money back, the history keeps two separate entries, the transfer and the refund. When you count up your sales, treat the two as offsetting each other and as a single transaction, and add a note such as "refund for the discount" in the memo field of the history. That prevents the accident of counting the same item twice when you look back later.

For items that did not sell, carrying them over to a flea market app is one option. What you wrote on the product page for the price tag, the model number, when it was bought and the condition it is in, can be used as it stands as a draft for the listing. Note that shipping and the selling commission enter into how the price is put together, so if you carry the day's pricing over unchanged, the amount left in your hands changes. Keeping the photos you took at the venue makes preparing the listing lighter still.

Sales Tracking and Tax Considerations

Flea market and garage sale revenue may require tax filing depending on annual totals. Selling personal used items is generally tax-exempt, but reselling purchased goods or selling precious metals and jewelry exceeding 300,000 yen per item is taxable.

A QR code payment advantage is automatic transfer history recording in the app. While cash transactions require handwritten records, QR payments automatically log dates, amounts, and counterparty information. Saving transfer history screenshots provides useful documentation if tax filing becomes necessary.

If annual sales are expected to exceed 200,000 yen, consult a tax office or accountant early. Ignorance is no excuse in tax matters.

A flea market or garage sale is also an easy entry point into a side business. With QR code payment, a record of what sold and for how much is there from the start, which gives you material for deciding whether to keep going. Start small, and check what kind of record ends up in your own hands.