APH Yield Calculator
Yearly yields and T-yield to plugged APH average.
What it does
Crop insurance guarantees grow from proven yields. Actual Production History averages four to ten years of farm records, plugging disaster years at 60 % of the county T-yield so one flood never zeroes a decade. The average prices every policy.
The tool above takes T-yield plus four to ten actuals, plugs sub-floor years, and prints APH with plug and year counts. Blanks mark missing years; entering fewer than four stops with an error instead of a guess.
RMA APH rules with extension farm-business guides teach this same average-with-plugs method behind coverage and guarantees. T-yields come from county actuarials; plugs soften lows without erasing them.
File with paper. Settlement sheets, bin measures, and acreage by unit prove every bushel the average claims. Higher APH lifts guarantees downstream, so records earn twice: at claim time and at coverage time.
How to use
- Enter county T-yield.
- Enter at least four yearly actuals.
- Leave missing years blank.
- Read APH, plug count, and year count.
- Multiply by coverage for guarantees.
- File with records behind every bushel.
Formula
- T-yield
- County expected yield for the crop.
- actuals
- Actual yearly yields, at least four.
- 60% T
- Floor at 60 % of T-yield.
Needs at least four yearly yields; enter up to ten with blanks for missing. Plugging uses 60 % of T-yield, the standard floor; record-count tiering and cups vary by program year, so confirm current RMA rules before filing.
Worked example
Example: 200, 190, 100, 210
Four corn yields with one disaster year, T-yield 180.
- Four years: 200, 190, 100, 210. T-yield 180.
- Floor: 0.60 x 180 = 108.
- Plug the 100 up to 108.
- Sum: 200 + 190 + 108 + 210 = 708.
- APH: 708 / 4 = 177 bu/ac.
Reference table
| Actual | Counts as | Why |
|---|---|---|
| 200 | 200 | Above floor |
| 150 | 150 | Above floor |
| 108 | 108 | At the 60 % floor |
| 90 | 108 | Plugged up |
| 50 | 108 | Plugged up |
Limits
- Simplified 60 % floor; tiering varies by program year.
- Needs real records; estimates risk denial.
- Coverage math sits downstream of APH.
- Confirm current RMA rules before filing.
Common mistakes
- Averaging three years as APH.
- Skipping plugs on disaster years.
- Using elevator average as farm APH.
- Losing settlement sheets.
- Confusing APH with trend-adjusted yields.
Try it yourself
Quick checks. Answers sit tucked under each question.
APH for 150, 160, 80, 170, 190 with T 170?
Floor is 0.60 x 170 = 102. Plug the 80. Sum is 150 + 160 + 102 + 170 + 190 = 772. APH is 772 / 5 = 154.4 bu/ac.
APH for 170, 180, 190, 200 with T 170?
All four clear the 102 floor. Sum is 170 + 180 + 190 + 200 = 740. APH is 740 / 4 = 185 bu/ac with 0 plugs.
Questions
What is APH?
Actual Production History: the proven yield behind crop insurance guarantees. Four to ten years of actuals average in, with low years plugged at 60 % of the county T-yield so one disaster never zeroes coverage.
What is T-yield?
The county expected yield published yearly for the crop and practice. New ground, missing years, and plugged years all lean on it. Find it in the county actuarial documents.
How does the 60 % plug work?
Actuals under 60 % of T rise to 60 % in the average. A 100 on a 180 T counts as 108. The plug softens disasters without erasing them.
How many years count?
Four minimum for APH, up to ten counted. Fewer years lean harder on T-yield plugs; full decades stand on their own records.
How does APH set the guarantee?
Guarantee equals APH times coverage level times price election. Higher APH lifts every dollar downstream, which is why records beat plugs.
What records prove yields?
Keep settlement sheets, bin measurements, and acreage reports by unit. APH audits forgive nothing; paper proves bushels.