How many questions are on the Iowa permit test?
The Iowa permit knowledge test typically has 25 to 50 questions depending on the office and the version delivered on the day. To pass you need approximately 80% — that is usually 20 of 25, 32 of 40, or 40 of 50 correct. The test is delivered on a touchscreen at the IA DOT, and you generally cannot go back and change earlier answers once you advance past them.
How much does the permit cost in Iowa?
The current Iowa learner's permit fee is $6, payable at the counter by card, cash, or check (some Iowa branches are card-only). If you fail the knowledge test you may be required to pay a re-test fee for each subsequent attempt; check the current fee schedule on the IA DOT website before your appointment.
For a deeper read on this topic across all 50 states, see our right-of-way, speed limits, and alcohol and drugs articles.
How long do I have to hold the permit?
In Iowa the supervised hold period is 6 months. During that time you must drive with a licensed adult age 21 or older in the front passenger seat. Many Iowa counties also require 50 logged hours of supervised driving, with at least 10 of them after sunset, before you become eligible for the road test.
Can I take the test in another language?
The Iowa permit test is offered in English and Spanish at every IA DOT office, and additional languages — typically Mandarin, Vietnamese, Korean, Tagalog, Russian, Armenian, and Punjabi — are available at major county offices and on most online versions. An interpreter you bring yourself is generally not allowed for the knowledge test.
What if I fail?
Most Iowa counties allow you to retake the test the same day or the next business day. After three consecutive failures you may be required to wait a longer period and pay an additional fee. The IA DOT will tell you which sections you missed; spend extra time in those sections of the handbook before returning.
Quick facts about Iowa
- Capital: Des Moines
- Minimum permit age: 14
- Current permit fee: $6
- Supervised hold period: 6 months
- Adult BAC limit: 0.08% · Under-21 BAC: 0.02%
- Default speed limits: 70 mph rural Interstate, 65 mph urban Interstate, 25 mph residential, 20 mph school zone
- Handheld phone use: banned
- Vision standard: 20/40 acuity in at least one eye, corrected or uncorrected
- Reinstatement fee after suspension: $200
- Official source: IA DOT
Other Iowa guides on PermitPrep
Each link below opens a dedicated Iowa page. Every guide is built from the same official IA DOT handbook so the rules stay consistent across topics.
- Iowa Permit Practice Test — Practice test for Iowa drivers.
- Iowa Driving Permit Guide — Permit guide for Iowa drivers.
- Iowa Road Signs Test — Signs test for Iowa drivers.
- Iowa Traffic Laws Summary — Traffic laws for Iowa drivers.
- Iowa Right-of-Way Rules — Right of way for Iowa drivers.
- Iowa Speed Limits Explained — Speed limits for Iowa drivers.
- Iowa DUI Laws — DUI laws for Iowa drivers.
- Iowa Cell Phone Laws — Cell phone laws for Iowa drivers.
Ready to test what you have learned? Take the free Iowa permit practice test — 20 randomized questions, instant grading, full explanations.