Rotational Molding worked example
Mold Payback with mold tooling investment of 12,500 $: a worked example
This worked example runs the mold payback numbers for a tougher week than the baseline: mold tooling investment of 12,500 $ instead of the typical 25,000 $. Mold payback period is the time it takes for the savings generated by a new rotomold to recover its tooling investment, net of ongoing support cost.
The inputs for this scenario
- Mold tooling investment: 12,500 $ (the input this scenario stresses; the baseline uses 25,000)
- Gross annual savings from the mold: 18,000 $ / yr (held at the documented default)
- Annual mold support cost: 2,500 $ / yr (held at the documented default)
Working through the calculation
- The calculation starts from the formula this tool documents: Net annual savings = annual savings - annual support.
- Payback period works out to 0.81 yr at these inputs, and this is the headline figure for the scenario.
- Net annual savings works out to 15,500 $ / yr at these inputs.
- Investment works out to 12,500 $ at these inputs.
- Five year net works out to 65,000 $ at these inputs.
How this compares with the baseline
- Against the tool's baseline example, where mold tooling investment sits at 25,000 $ and the headline result is 1.61 yr, this scenario comes in 50% below the baseline at 0.81 yr.
- Use it when deciding whether to commission a new rotomold, re-tool an aging one, or bring an outsourced part in-house. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.
Results at a glance
- Payback period: 0.81 yr (headline result)
- Net annual savings: 15,500 $ / yr
- Investment: 12,500 $
- Five year net: 65,000 $
Run it with your numbers
- To rerun this with your own numbers, open the live Mold Payback calculator, set mold tooling investment to your actual value, and adjust the remaining inputs to match your operation.
Last reviewed 2026-05-12.