Monthly Software Cost Estimator

This estimator multiplies your unit count by a low and a high price per unit per month and then adds any fixed monthly platform fee. The result is a range, not a quote, because most vendors also apply minimum monthly charges, tiered discounts or add-on modules that are not captured here.

How to use it. Enter the number of doors you manage, pick the closest pricing model from the list (the per-unit ranges are illustrative placeholders, not any vendor's real prices), and then overwrite the low and high prices with figures from the pricing pages you are comparing. If a vendor charges a flat monthly base fee, enter it in the base fee box.

Formula. Monthly cost = units x price per unit + base fee. Annual cost is twelve times that figure.

Worked example (illustrative). For 40 units at 1.50 to 3.00 dollars per unit with no base fee, the range is 40 x 1.50 = 60 dollars to 40 x 3.00 = 120 dollars per month, or 720 to 1,440 dollars per year. Add a 50 dollar base fee and the range becomes 110 to 170 dollars per month.

Limits. The tool does not include one-time onboarding fees, payment processing, tenant screening, e-signature or text message charges, or taxes. Use the rent payment fee calculator and the hidden costs guide to add those. Always confirm current prices and minimums with the vendor.