9x12 Postcard ROI Calculator

See what just a few new customers can be worth over time. Plug in your numbers below.

What you pay to be on the card ($)

Number of homes this card mails to

Average sale amount from a new customer ($)

Estimated profit margin (%)

If you’re not sure, just take a guess. You can always adjust later.

Average number of times a customer returns per year

How many years you typically keep a good customer

How many new customers do you think this card will bring?

Lifetime profit per new customer:

Total lifetime profit from this card:

Net profit after ad cost:

Return on Investment (ROI):

New customers needed just to break even:

Try some quick examples:

Note: These numbers are only estimates based on the values you enter. Every business is different, so real-world results can vary. This tool isn’t a promise of performance—just a helpful way to see potential value.