How to Calculate Printer Cost Per Page: The Formula and the Traps

The sticker price of a printer is marketing. The cost per page is the truth. A $99 printer that costs 12 cents a page will eat a $199 printer that costs 2 cents a page for breakfast within two years, and the only way to know which is which is to run the formula yourself. It takes about 30 seconds once you know it.

The Formula

For monochrome printing, the core formula is dead simple:

Cartridge price / Page yield + Paper cost per sheet = Cost per page

Cartridge price is what you actually pay for the replacement. Page yield is the manufacturer's rated number of pages per cartridge, usually printed on the box or the product page. Paper cost per sheet is the ream price divided by the sheet count. Note the quirk: when printer reviews quote cost per page, paper is usually not included, so compare like with like.

For color, add up each cartridge:

(Black price / Black yield) + (Color price / Color yield x number of color cartridges) + Paper = Color cost per page

Worked Example: The Cheap Inkjet

Take a typical budget inkjet running an HP 63XL black cartridge at $39.89 with a rated yield of 480 pages, plus a ream of paper at $34.94 for 500 sheets ($0.069 per sheet).

$39.89 / 480 + $0.069 = $0.15 per page.

Fifteen cents a page. Print 100 pages a month and that is $180 a year in ink and paper alone. This is the razor-and-blades model doing exactly what it was designed to do, and it is why the first question to ask about any cheap printer is not the price but the cartridge yield.

Worked Example: The Budget Laser

Now a budget monochrome laser. Toner cartridge $75, rated yield 3,000 pages. Same paper at $0.016 a sheet if you buy a $8 ream of 500. Laser printers also have separate long-life parts: say a drum at $120 rated for 20,000 pages.

$75 / 3,000 + $0.016 + $120 / 20,000 = $0.025 + $0.016 + $0.006 = $0.047 per page.

Under 5 cents a page versus 15. At 100 pages a month, the laser costs about $56 a year to run. The inkjet cost $180. That $124 annual gap pays for the printer's price difference in the first year. Over three years you are looking at several hundred dollars apart, which is why I tell people to calculate this before buying, not after.

This is also the math behind the comparison in ink tank vs. laser: tank printers land in laser territory on running costs, which is what makes them interesting. And subscriptions like HP Instant Ink are just this formula repackaged as a monthly page allowance, worth checking against your real volume.

The Three Traps That Skew the Number

Coverage. Rated yields are measured at 5 percent page coverage, roughly a third of a page of double-spaced text. If you print dense reports or graphics, your real yield can be half or a third of the rated number, which doubles or triples your real cost per page. Heavy-coverage printing punishes inkjets hardest.

Separate parts. A printer can have a cheap toner cartridge and an expensive drum, fuser, or maintenance kit that the headline per-page number quietly excludes. Always check whether the printer has separately replaceable parts and price their per-page cost too.

Cleaning cycles. Inkjets burn ink on printhead cleaning, especially if you print rarely. A printer that sits idle for weeks can empty cartridges without printing a single page you wanted. If you print less than a few pages a week, a laser avoids this entirely.

My opinion, after running these numbers for years: for almost anyone printing mostly black text, a mono laser or an ink tank printer wins on total cost of ownership. The standard-cartridge inkjet only wins for people who print very little and value the low entry price. Run your own numbers with the calculator below before you believe any of this.