I'll jump in here and let
@mildone add on if he wants to. The net cap cost is one aspect of how your lease payment will be calculated, and yes you can include allowances/incentives/trade-ins/down-payments in factoring your net cap cost.
Once you have that, the other factors are the residual value (RV) and money factor (basically an interest rate) being used.
Here's a hypothetical scenario. You have a car you like with an MSRP of $30,000. You've managed to negotiate a purchase price of $28,500 and the dealer agrees with you in writing. Then you tell him you have a trade in, and you mutually agree that is worth $3,500. You opt not to put a down-payment. So your net cap cost is $25,000 ($30,000 MSRP, negotiated down to $28,500 minus your trade in of $3,500 = $25,000)
So now that you have the $25,000 net cap cost as the starting point, the RV comes into play, which will be a fixed number based on the original MSRP. This is basically what the dealer thinks the car will be worth once your lease is up and will vary depending on the term of your lease and the annual mileage built in. Let's say you plan to lease for 36 months and the dealer is proposing a RV of 60%, which will be applied against the original MSRP. 60% of $30,000 is $18,000, so the dealer feels they can re-sell your car for $18,000 once your 36 months lease is up. But you've negotiated a net cap cost of $25,000. The difference between your net cap cost & the RV is $7,000
In your case $7,000 over 36 months, or $194/month.
But wait, there's interest of course, or as leasing goes, the Money Factor (MF). Dealers will play around with this a lot to lease where they have tons of inventory and offer really low MFs to incent you to lease certain models. The MF may be .002. That factor is applied against the net cap cost PLUS the RV. In your case, $25,000 + $18,000 = $43,000.
So $43,000 x .002 = $86/month
Now add the monthly depreciation (RV factor) to the MF and you have a lease payment of $280/month ($194+$86).
Sales tax will be worked in as well.
So you can see how the factors that really drive a good lease deal are (1) net cap cost, (2) RV, and (3) MF.
You'll show the dealer you know what the hell you're doing.