More service, less effort. Bookings become loyal guests.

All cumulative values in this calculator are nominal: a euro of profit in year 10 counts the same as a euro in year 1. A full investment appraisal would discount future cash flows using a cost-of-capital rate (net present value method), making later profit count for somewhat less. We deliberately skip this because, at the investment sizes typical here (a few hundred to a few thousand euros), it barely moves the numbers, while it would make the calculator considerably more complex. If you need a formal investment appraisal, discount the figures shown here using an appropriate cost-of-capital rate.

An extra night sold isn't automatically pure profit, variable costs apply (supplies, payment fees, extra effort). We therefore apply an 80% contribution margin: of every euro of extra revenue from filling gaps, we count 80 cents as actual benefit. Commission savings don't need this discount, they're a genuine 1:1 saving with no added cost.

Nights that currently stay unsold tend to be the weaker-demand ones: off-season, edge days, last-minute availability. We therefore apply 80% of your average rate to these nights, not the full average. Combined with the contribution-margin discount (point 2), that's a roughly 36% combined discount versus a naive calculation at full average rate.

ROI relates cumulative net return to cumulative total cost of that same year (one-time costs plus all running costs incurred so far). It shows the return on the total capital deployed, not just the initial outlay, and grows each year that net return keeps outpacing cost.

All figures in this calculator are gross, before income or corporate tax. How much is left after tax depends on your individual tax situation, which a general calculator can't model.

The BOOQnb fee used here (€199 one-time, then €29/month from year 3 on the Pro plan) is a limited-time pilot condition for early customers, not a long-term guaranteed price structure. Building a 10-year forecast on it is a simplification, it reflects the currently valid terms in the pricing section.

We don't account for inflation, your revenue per property stays constant over 10 years except for the growing direct-booker share. That tends to understate the benefit rather than overstate it. The direct-booker share grows compound-interest-style up to a hard cap of 100%, in practice such a curve would more likely flatten out (a saturation effect) rather than keep growing unchecked.

We estimate your stays per year by dividing the nights booked across all properties each year by 4, the average length of stay in the DACH region. Each stay is an opportunity for an upsell through the Boarding Pass, for example an earlier check-in, a welcome basket, or a later check-out. The slider value is already your net share after the service provider's cut, so it flows straight into your additional potential without any further discount. It's an average: not every stay actually produces an upsell, but others bring in more than one.