Wisconsin reports that outsized numbers of its clerical and office workers and those aged 51 to 65 owe back taxes, according to an analysis by Solvable.com that examined groups of residents in each state whose tax debts deviate from the national average.

Overall, 16.4% of all federal levies go unpaid, according to Solvable, which provides consumers with digital platforms that link them up with companies that can help them with their tax problems.

Nationwide, taxpayers aged 51 to 65 were found to have the highest likelihood of owing back taxes, the study concluded. And 65% of tax debt cases involve households earning under $75,000 annually, researchers found.

Among worker classifications, those in professional or technical fields are the most likely to carry tax debt, according to Solvable.com. These workers include pilots, undertakers, doctors, consultants, computer programmers and other technicians.

Those who earn the least tend to have tax debts, the study said. And 55% of those who have back taxes to pay owe more than $10,000, while just under 30% owe debts of $10,000 to $19,999, according to the analysis.

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Significant Tax Debt Data by State

StateGroups Making up Outsized or Low Numbers of Tax Debt CasesAlabamaMilitary personnel, those with household income of under $40,000AlaskaNurses, those aged 51-65ArizonaTeachers and educatorsArkansasInsurance / underwritersCaliforniaThose aged 51-65, real estate agents, those with household incomes below $75,000ColoradoProfessional driversConnecticutProfessional / technical and upper management and those with household incomes above $75,000DelawareSelf-employed people, those over 65 years oldDistrict of ColumbiaMilitary personnelFloridaReal estate professionalsGeorgiaThose with under $75,000 in incomeHawaiiThose owing more than $50,000IdahoThose with household income of under $40,000IllinoisThose who owe debts of $7,500 or lessIndianaSkilled trade / machine laborersIowaThose who owe debts of $7,500 or lessKansasSelf-employed people KentuckyThose aged 41-50LouisianaThose earning $40,000 or less and those under 40 years oldMaineWomen, teachersMarylandPeople with income over $100,000MassachusettsHouseholds with income over $100,000MichiganSkilled trade / machine laborers, those with household incomes of $40,000 or lessMinnesotaThose making more than $40,000MississippiThose with debts of under $7,500MissouriTaxpayers aged 51-65 MontanaSelf-employed people, middle managementNebraskaProfessional drivers, nursesNevadaRetirees, those ages 66-75New HampshireBeauty professionals, sales / marketing professionals, households earning $125,000New JerseyHouseholds with more than $100,000 in annual incomeNew MexicoMilitary personnel, households making under $40,000 annuallyNew YorkHouseholds making $100,000 or moreNorth CarolinaSelf-employed peopleNorth DakotaThose over age 50 and households making more than $125,000OhioSkilled trade / machine laborersOklahomaMilitary personnelOregonSkilled trade / machine laborers and retireesPennsylvaniaProfessional / technical positionsRhode IslandMiddle managementSouth CarolinaFewer cases for debt amounts of more than $50,000South DakotaThose over age 65 and teachers / educatorsTennesseeThose making less than $40,000 and clerical / office workersTexasTaxpayers aged 51-65UtahBeauty professionalsVermontUpper management / executives, households making more than $75,000VirginiaThose with incomes of more than $100,000, those over age 76WashingtonRetirees West VirginiaProfessionals in middle managementWisconsinClerical / office workers, those ages 51-65WyomingInsurance / underwriters

Source: Solvable.com