How to save receipts so they don't fade?

Most printed receipts are produced on thermal paper, which uses heat rather than ink to create an image. This makes them fast and cheap to print but also extremely vulnerable to fading. Here is how to slow down the process — and how to avoid the problem entirely.

Why receipts fade

Thermal paper is coated with a chemical that darkens when heated. Over time, heat, light, and especially friction cause the coating to react and turn the paper uniformly dark or bleach it entirely. This is why receipts in wallets — exposed to body heat and constant handling — fade fastest. Even a few months can make a receipt unreadable.

How to slow fading if you keep paper

• Store in the dark — UV light accelerates fading. A closed folder or envelope makes a significant difference.
• Avoid heat — do not leave receipts in a car, near a heater, or in direct sunlight.
• Separate from other papers — certain plastics and carbonless copy papers contain compounds that accelerate fading in thermal paper.
• Do not laminate — counter-intuitively, laminating thermal paper applies enough heat and pressure to accelerate fading.
• Handle minimally — oils from your fingers react with the thermal coating.

The definitive solution: go digital immediately

A photograph or scan taken the day you receive a receipt captures it at full clarity. A clear digital copy of a faded receipt is worthless; a digital copy taken early is permanent. The ATO and most tax authorities accept high-quality digital images of paper receipts as valid records.

Receipt apps like rct-keep let you photograph a receipt in seconds and store it permanently in the cloud. The original paper can be discarded once you have confirmed the image is clear.