Study: single drivers pay 20–35% more than married drivers for the same car
Holding age, gender, and everything else equal, a single driver is charged 20 to 35 percent more than a married one for identical coverage — and it is written into insurers' own filed, regulator-approved rate manuals. FastAutoQuote read three carriers' filings directly and quantified the gap.
The finding
Marital status is a permitted rating factor in most states, and every carrier we examined files a lower driver-class factor for married drivers than for single ones at the same age. We transcribed the married-versus-single factors by hand from each filing, taking each pair at a single fixed age so the comparison isolates marital status:
- GEICO (Pennsylvania): 0.90 married vs 1.08 single at age 40 — the single driver pays about 20% more on that coverage. (SERFF GECC-134881413.)
- Nationwide (Arizona): 0.970 married vs 1.290 single for a 30-year-old woman — about 33% more. (SERFF NWPP-134565960.)
- Mercury (Nevada): 1.18 married vs 1.61 single for a 30-year-old woman — about 36% more. (SERFF MERY-133976815.)
The direction is unanimous and the size is meaningful. Because these pairs are taken at one age each, the gap is close to a clean read of what marital status alone is worth in each filing.
Why it matters
The single-driver penalty is largest for younger drivers — the two 30-year-old examples (33% and 36%) run higher than the 40-year-old (20%) — so it lands hardest exactly when premiums are already highest. It is not a fee a driver can see on a quote; it is baked into the rate. And it is one of the more debated variables in auto insurance, because getting married does not change how you drive.
Expert commentary
“Marital status is a statistically valid predictor — married drivers file fewer and smaller claims as a group — which is why regulators permit it in most states. But it is a life-status characteristic, not a driving behavior, so it is fair for a careful single driver to feel penalized by it. The practical answer is to shop: carriers weigh this factor very differently, and a telematics-based program can let demonstrated safe driving outweigh a demographic factor.”
Methodology
Every figure here was transcribed by hand from the carrier's private-passenger auto rate manual on public file with the state's insurance department through the SERFF filing system, and verified against the source line. We compare married-versus-single at a single fixed age per carrier to isolate marital status; the specific dollar effect depends on each driver's full profile. These are three carriers' filed factors in three states, not a market-wide average. Full method: our methodology. The underlying factors also appear on our does being married lower your rate explainer.
Cite this study
Journalists and researchers are welcome to cite this analysis with attribution. We can point you to the exact public filing behind any figure. Suggested citation:
FastAutoQuote, “Single drivers pay 20–35% more than married drivers for the same car” (2026), analysis of GEICO, Nationwide, and Mercury filed rate manuals.
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