Annual Contract Monthly Payment Calculator

The annual total is the season bundle minus an optional prepay discount, then spread into equal payments across your billing window:

seasonMowing = cutsPerYear × pricePerCut
addOns       = Σ(annual add-on amounts)
annualTotal  = (seasonMowing + addOns) × (1 − discount)
monthly      = annualTotal ÷ billingMonths

Round-up + true-up. When you round the monthly up to the next $1 or $5 (a cash-flow cushion), the final payment absorbs the remainder so every payment still re-sums to the annual total exactly:

roundedMonthly = ceil(monthly to $1 or $5)   // months 1…N−1
trueUpFinal    = annualTotal − roundedMonthly × (N − 1)   // final month
Σ payments     = annualTotal   ✓ (the honesty check)

Two billing windows. 12-month spreads the season across a full year (flat winter and summer); active-season bills equally only across the months you mow. Flat vs pay-per-visit view shows the same flat monthly beside a peak mowing month and a zero off-season month.

This is level / "budget" billing — the same idea utilities use to smooth a seasonal bill. The discount and round-up are your business choices; the tool never assumes them. It is an illustration, not a billing engine.

Level billing needs a season total to spread, and where that total comes from depends on the account. For a residential treatment round it is the priced visit schedule behind a full-season program; for a grounds contract it is the annual bid built service line by service line. Whichever figure you spread, write the payment schedule into the recurring service agreement so the customer sees the flat month and the season it covers in one document. Mapping a single visit price across weekly, biweekly and monthly cadences is the opposite move, and belongs in the recurring versus one-time pricing tool instead.