Working days and business dates
Count working days between dates or find a date after adding working days. Choose a manual Monday-to-Friday calendar or the covered Taiwan government calendar.
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Simple investment payback
Find when cumulative undiscounted cash inflows first recover an initial investment. Enter each period's net cash flow in order, including negative flows.
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First payback time
3.25years
Shows the first time the initial outlay is recovered. Later losses remain possible; returns are not guaranteed.
Net gain or loss at the end30,000 TWD
Total net cash recovered130,000 TWD
Accumulates undiscounted net cash flows. When the initial investment is first recovered, interpolates within that period assuming uniform inflow. For example, 1,000 invested with 400 per period pays back at 2.5 periods. Later losses remain possible. Shows the ending net amount; payback is not a profit guarantee and is not IRR, NPV or break-even sales volume.
Method and scope
Add each period's cash flow until the initial outlay is first reached. Within the recovery period, interpolate assuming its net cash arrives uniformly.
The payback time identifies the first recovery point, not a permanent profit. The ending net cash result helps show losses that may happen later.
Cash is not discounted for its timing or risk. This is not IRR, net present value or break-even unit sales, and it does not guarantee that forecast flows will occur.
References:OpenStax: algebra and applications
What this helps you do
Find when cumulative undiscounted cash inflows first recover an initial investment. Enter each period's net cash flow in order, including negative flows.
What to enter
Start with initial investment (twd), then fill the other relevant fields in the units shown. The field hints explain the required format and examples.
How the calculation works
Add each period's cash flow until the initial outlay is first reached. Within the recovery period, interpolate assuming its net cash arrives uniformly.
Worked example
With TWD 1,000 invested and TWD 400 received each period, first payback occurs at 2.5 periods. Select years or months to match the flow list.
Understanding the answer
The payback time identifies the first recovery point, not a permanent profit. The ending net cash result helps show losses that may happen later.
Scope and limitations
Cash is not discounted for its timing or risk. This is not IRR, net present value or break-even unit sales, and it does not guarantee that forecast flows will occur.