Guide sensitivity: three-year annualized cost is about 70% above seven years with the other Epoch inputs fixed
~70%derived
| Value kind | derived — Derived values are guide calculations; their result is only as fixed as the stated inputs, scope, and method. |
|---|---|
| Scope | Guide sensitivity with fixed Epoch May 2026 capital, annual operating cost and WACC. Only economic earning life changes; book depreciation is separate. The workbook default is about 5.3 years, not exactly five. |
| As of | 2026-05 |
| Source | Epoch AI, Amelia Michael and Ben Cottier, May 2026 workbook; Guide fixed-life calculation. · Linked May 2026 workbook https://docs.google.com/spreadsheets/d/1-iqUky_cR4Kvmv9pLs67ChQLlCfSXVqV955ARmx2ypc/edit; Main!H29,H31,H10,I30,I32,I33,D60,D64; Chapter 1.8 fixed-life calculation. |
| Derivation | Guide sensitivity using Epoch linked workbook Main: IT capex H29+H31=$26.113514761B; fixed H10+I30+I32+I33=$2.3229861642B/year; r=D60=7.83%; CRF=r/(1-(1+r)^(-n)). Only IT life changes. Default D64=5.320776256 years differs from exact five-year sensitivity. Source webpage contains inconsistent rounded 3-year figures; this record uses the auditable workbook calculation. (12.424837552716713 / 7.309547322681213 - 1)*100 = 69.98094415728006%, displayed as about 70%; calculate before rounding the cost endpoints. |
| Review | checking…review by 2027-03-05 · standard cadence |
| Recorded changes | last 2026-09-16 |
| Claim id | three-year-tco-premium-vs-seven-year-guide-model |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.