Iowa vs South Dakota
Registering a new $35,000 vehicle costs about $1,494 in South Dakota versus $2,155 in Iowa — a $662 first-year advantage for South Dakota.
Cost comparison
| Iowa | South Dakota | Difference | |
|---|---|---|---|
| First-year total All-in cost to register a new $35,000 gas vehicle for the first time, including sales tax, title, and registration. | $2,155 | $1,494 | +$662 |
| Annual renewal (year 2+) Recurring annual cost after the first year — what you actually pay every year you own the car. | $365 | $76 | +$289 |
| Sales tax (one-time) Sales/use/excise tax owed at purchase on a $35,000 vehicle, using typical local rates. | $1,750 | $1,400 | +$350 |
| Combined sales tax rate State rate plus typical local rate (where applicable). | 5.00% | 4.00% | +1.00 pp |
| EV first-year total Same $35K scenario but as a battery electric vehicle, capturing EV-specific surcharges. | $2,285 | $1,544 | +$742 |
| EV annual renewal Recurring EV-ownership cost in year 2+. | $495 | $126 | +$369 |
| EV surcharge Annual EV-specific registration fee (zero in states without one). | $130 | $50 | +$80 |
How each state structures it
Iowa
Iowa's annual registration combines a small weight component ($0.40 per 100 lbs — about $15/year for typical passenger cars) with a value-based portion: 1.00% of original MSRP for years 1-6, dropping to 75% (years 7-9), 50% (years 10-11), then a $50 flat minimum from year 12+. So a new $35,000 vehicle pays about $365/year in registration ($15 weight + $350 value), dropping to $278 by year 7 and $50 by year 12. Sales tax is replaced by the "Fee for New Registration": $10 base + 5% of purchase price minus trade-in, with NO local additions — Iowa is one of the few states with completely uniform vehicle purchase tax. Title fee is $25, plate fee $5. EV surcharge is $130/year. A new $35,000 vehicle runs about $2,165 in first-year costs, with annual renewals around $365 dropping over the age tiers.
South Dakota
South Dakota has one of the lower vehicle tax burdens in the US: a 4% Motor Vehicle Excise Tax replaces sales tax (no local additions), full trade-in credit, no annual ad valorem, no state income tax, and no required inspections or emissions testing. Registration is weight + age tiered ($72/year for typical passenger; 30% discount for vehicles 10+ years old). Title fee is just $10. County wheel tax can add up to $60/vehicle in participating counties. EV surcharge is $50/year (low by US standards). A new $35,000 vehicle in South Dakota runs about $1,503 in first-year costs (mostly the $1,400 excise tax + $76 registration + small fees), with annual renewals around $76.
What this means for you
- Buying a new car: South Dakota is roughly $662 cheaper than Iowa in the first year on a $35K vehicle, driven mostly by sales tax and one-time fees.
- Annual renewal: South Dakota is cheaper to renew annually by about $289/year. Over a 5-year ownership period that's roughly $1,446 in renewal-fee savings alone.
- If you drive an EV: South Dakota's EV surcharge ($50/year) is meaningfully lower than Iowa's ($130/year) — a 62% savings on the EV fee alone.
- Structural differences: Neither state imposes an annual ad valorem vehicle property tax, so renewal costs stay relatively flat after the first year for both.
Frequently asked questions
Is it cheaper to register a car in Iowa or South Dakota?
South Dakota is cheaper to register a new $35,000 vehicle: $1,494 first year vs $2,155 in Iowa, and the gap continues into annual renewals.
What is the sales tax difference between Iowa and South Dakota?
Iowa charges 5.00% combined sales tax on vehicles; South Dakota charges 4.00%. On a $35,000 purchase that's $1,750 in Iowa vs $1,400 in South Dakota.
Do Iowa and South Dakota both charge EV registration fees?
Iowa: $130/year EV surcharge. South Dakota: $50/year EV surcharge. EV fees are added on top of standard registration costs.
Official sources: Iowa DOT • South Dakota DOR Motor Vehicle Division
Data last updated: 2026-05-23