| Principal LifeTime Hybrid Income Fund | Institutional Class | PHTFX | — |
| Principal LifeTime Hybrid Income Fund | R-3 | PHTEX | — |
| Principal LifeTime Hybrid Income Fund | R-5 | PHTDX | — |
| Principal LifeTime Hybrid Income Fund | R-6 | PLTYX | — |
| Principal LifeTime Hybrid 2055 Fund | Institutional Class | PLTNX | — |
| Principal LifeTime Hybrid 2055 Fund | R-3 | PLTLX | — |
| Principal LifeTime Hybrid 2055 Fund | R-5 | PLTKX | — |
| Principal LifeTime Hybrid 2055 Fund | R-6 | PLHTX | — |
| Principal LifeTime Hybrid 2060 Fund | Institutional Class | PLTHX | — |
| Principal LifeTime Hybrid 2060 Fund | R-3 | PLTEX | — |
| Principal LifeTime Hybrid 2060 Fund | R-5 | PLTDX | — |
| Principal LifeTime Hybrid 2060 Fund | R-6 | PLKTX | — |
| Principal LifeTime Hybrid 2015 Fund | Institutional Class | PHTMX | — |
| Principal LifeTime Hybrid 2015 Fund | R-3 | PHTCX | — |
| Principal LifeTime Hybrid 2015 Fund | R-5 | PHTRX | — |
| Principal LifeTime Hybrid 2015 Fund | R-6 | PLRRX | — |
| Principal LifeTime Hybrid 2020 Fund | Institutional Class | PHTTX | — |
| Principal LifeTime Hybrid 2020 Fund | R-3 | PHWIX | — |
| Principal LifeTime Hybrid 2020 Fund | R-5 | PHTIX | — |
| Principal LifeTime Hybrid 2020 Fund | R-6 | PLTTX | — |
| Principal LifeTime Hybrid 2025 Fund | Institutional Class | PHTQX | — |
| Principal LifeTime Hybrid 2025 Fund | R-3 | PHTPX | — |
| Principal LifeTime Hybrid 2025 Fund | R-5 | PHTOX | — |
| Principal LifeTime Hybrid 2025 Fund | R-6 | PLFTX | — |
| Principal LifeTime Hybrid 2030 Fund | Institutional Class | PHTNX | — |