Common Law Marriage Divorce in South Dakota: 2026 Complete Legal Guide

South Dakota abolished common law marriage on July 1, 1959, meaning couples cannot establish a new common law marriage within the state. However, South Dakota fully recognizes common law marriages validly formed in other states under SDCL § 25-1-38, and couples with pre-1959 South Dakota common law marriages retain full marital rights. Divorcing a common law marriage in South Dakota requires the same formal legal process as ending a ceremonial marriage, including a $97 filing fee, mandatory 60-day waiting period, and compliance with equitable distribution property division under SDCL § 25-4-44.

Does South Dakota Recognize Common Law Marriage?

South Dakota does not permit couples to form new common law marriages within the state. The South Dakota Legislature abolished common law marriage effective July 1, 1959, ending a practice that had been permitted since territorial days. Under current law, South Dakota residents can only obtain legal recognition of their unions by obtaining a marriage license from the Register of Deeds in their county of residence, paying the $40 license fee, and completing a formal ceremony. Couples who have cohabited for decades in South Dakota without a marriage license are not legally married under state law, regardless of how they present themselves to the community or whether they share finances, property, or children.

However, South Dakota recognizes two categories of common law marriages as valid: pre-1959 common law marriages established within South Dakota before the abolition date, and common law marriages validly formed in other jurisdictions. Under SDCL § 25-1-38, any marriage contracted outside South Dakota that is valid under the laws where it was contracted is valid in South Dakota. This recognition extends to common law marriages from states that still permit them, including Colorado, Iowa, Kansas, Montana, Oklahoma, Rhode Island, Texas, Utah, and the District of Columbia.

States That Recognize Common Law Marriage Near South Dakota

South Dakota residents who wish to establish a common law marriage have several geographically convenient options in neighboring and nearby states. Understanding each state's specific requirements is essential because a common law marriage carries the same legal weight as a ceremonial marriage, including property rights, inheritance rights, and the requirement of a formal divorce to dissolve the union.

Colorado requires both parties to be at least 18 years old and applies a holistic evaluation of whether the couple mutually agreed to enter a marital relationship based on a 2021 Colorado Supreme Court ruling. Iowa requires intent and agreement to be married, continuous cohabitation (including consummation), and public declarations as spouses. Kansas law under Kansas Statute 23-2502 emphasizes the public declaration or holding out as the acid test of a common law marriage. Texas permits couples to either file a Declaration of Informal Marriage with the county clerk or prove the three elements of agreement, cohabitation within Texas, and representation to others as married.

How to Prove a Common Law Marriage in South Dakota Courts

Proving a common law marriage in South Dakota requires demonstrating that the marriage was validly established under the laws of another jurisdiction or before July 1, 1959, in South Dakota. The burden of proof falls on the party claiming the marriage exists. South Dakota courts follow the legal standards of the state where the common law marriage was allegedly formed, which typically require three elements: mutual agreement to be married, cohabitation as spouses, and holding out to the public as a married couple.

Evidence courts commonly accept to prove common law marriage includes joint residential leases or mortgage documents showing both parties as married, shared household utility accounts, joint bank accounts or credit cards, tax returns filed as married filing jointly, insurance policies listing the other party as spouse, testimony from family members and friends about the couple's marital reputation, shared last names, introduction to others as husband and wife, and birth certificates listing both parties as parents. Documentary evidence carries more weight than testimony alone because proving an oral agreement between unmarried cohabitants is difficult, and courts may refuse to recognize claims lacking concrete proof.

For Texas common law marriages specifically, South Dakota residents should be aware of a critical 2-year deadline. Under Texas law, if a proceeding to prove an informal marriage is not commenced within 2 years of the date the parties separated and ceased living together, there is a rebuttable presumption that the parties did not agree to be married. While this presumption can be overcome with sufficient evidence, it significantly increases the difficulty of proving the marriage existed.

Filing for Divorce from a Common Law Marriage in South Dakota

Divorcing a common law marriage in South Dakota follows the identical legal process as dissolving a ceremonial marriage. The divorce filing fee totals $97, which includes a $50 base court filing fee, $40 automation surcharge, and $7 law library fee. An additional $50 to $75 is required for service of process through the county sheriff or a private process server. If you cannot afford the filing fee, South Dakota allows fee waivers for indigent filers by completing Form UJS-022 (Motion, Affidavit, and Order to Waive Filing Fee and Service of Process Fee) along with Form UJS-023 (Financial Statement) for households earning at or below 125% of federal poverty guidelines.

South Dakota has the most lenient residency requirements in the nation for divorce filing. Under SDCL § 25-4-30, the plaintiff must be a resident of South Dakota or a member of the armed services stationed in South Dakota at the time the action is commenced. There is no minimum duration of residency required. A person could theoretically move to South Dakota and file for divorce the same day. Compare this to neighboring states: Minnesota requires 180 days of residency, Nebraska requires residence for the full proceedings, and North Dakota requires 6 months.

South Dakota Divorce Grounds for Common Law Marriages

South Dakota recognizes seven statutory grounds for divorce under SDCL § 25-4-2. These apply equally to common law marriages and ceremonial marriages. The state offers one no-fault ground (irreconcilable differences) and six fault-based grounds (adultery, extreme cruelty, willful desertion, willful neglect, habitual intemperance, and conviction of a felony).

The no-fault option based on irreconcilable differences under SDCL § 25-4-2(7) is defined by SDCL § 25-4-17.1 as substantial reasons for not continuing the marriage. However, South Dakota has an unusual consent requirement that makes it one of only two states (along with Mississippi) that cannot grant a no-fault divorce over one spouse's active objection. Under SDCL § 25-4-17.2, irreconcilable differences require either both spouses to consent or the responding spouse to default by failing to make a general appearance. If your spouse contests the divorce and appears in court, you must prove one of the six fault-based grounds to obtain a divorce.

The 60-Day Waiting Period

South Dakota imposes a mandatory 60-day waiting period under SDCL § 25-4-34 that cannot be waived, shortened, or circumvented under any circumstances. No hearing, trial, or final judgment can occur until 60 days have elapsed from completed service of the summons and complaint on the defendant. This waiting period applies universally to uncontested divorces, contested divorces, and default divorces alike. The 60-day clock starts on the date service is completed, not the filing date.

An uncontested common law marriage divorce in South Dakota typically takes 60-90 days from filing to finalization and costs $2,000-$5,000 with attorney representation or $250-$500 for a DIY filing. Contested cases involving disputes over property division, spousal support, or child custody run 6-18 months at $10,000-$25,000 or more depending on complexity. If the court believes reconciliation remains possible, SDCL § 25-4-17.1 authorizes an additional continuance of up to 30 days before granting the divorce.

Property Division in Common Law Marriage Divorce

South Dakota follows equitable distribution principles under SDCL § 25-4-44, which grants courts authority to make an equitable division of property belonging to either or both spouses. The court must have regard for equity and the circumstances of the parties when making the division. Equitable means fair but not necessarily equal. A 50/50 split is not guaranteed, and judges have significant discretion in determining what is just.

South Dakota is an all-property state, which distinguishes it from many other equitable distribution jurisdictions. Under the all-property approach, even premarital assets, inheritances, and gifts may be subject to division. There is no automatic exemption for separate property as exists in states like California or New York. The source of property (inheritance versus earnings) can influence but does not automatically determine its disposition. Factors courts consider under case law established in Guindon v. Guindon, 256 N.W.2d 894 (S.D. 1977) include: duration of the marriage, value of property owned by each spouse, each spouse's age and health, each spouse's earning capacity, contribution of each spouse to property accumulation (including homemaking and child-rearing), income-producing capacity of assets, and economic misconduct such as dissipation or hiding of marital assets.

Child Custody and Parenting Requirements

Common law marriage divorces involving children require compliance with South Dakota's mandatory parenting education requirement under SDCL § 25-4A-32. Both parents must complete a court-approved parenting course within 60 days of service of the summons and complaint. No final decree can be entered until both parties comply or the judge grants a waiver. The SMILE Program (Start Making It Livable for Everyone) provides approved courses covering the effects of separation or divorce on children, co-parenting skills and responsibilities, children's needs and coping techniques, conflict resolution options for parenting disputes, and financial responsibilities of parents.

Online parenting classes through the South Dakota Unified Judicial System are available 24/7 and take a minimum of 4 hours to complete. Currently, there is no charge for these classes as the organization is funded under the South Dakota Department of Social Services. Upon completion, parents receive a Certificate of Completion to file with the Court. Failure to complete the required course can delay finalization of the divorce and may result in court sanctions.

South Dakota mandates mediation in custody and visitation disputes under SDCL § 25-4-56. The court shall order mediation unless exceptions apply, including certain domestic abuse convictions or history, unavailability of mediation services, or circumstances making mediation inappropriate. Mediation costs range from $100 to $300 per hour for custody disputes.

Spousal Support Considerations

South Dakota courts may award spousal support (alimony) in common law marriage divorces under SDCL § 25-4-41. The court considers factors including the length of the marriage, the age, health, and earning capacity of each spouse, the standard of living established during the marriage, the contribution of each spouse to the marriage (including domestic contributions), and the ability of the supporting spouse to pay. Common law marriages that lasted many years before the parties moved to South Dakota receive the same consideration for spousal support as ceremonial marriages of equivalent duration.

The duration of a common law marriage for support purposes is measured from when the marriage was established under the originating state's law, not when the couple moved to South Dakota. Couples who established a common law marriage in Colorado in 2010 and moved to South Dakota in 2020 would have a 16-year marriage as of 2026 for purposes of determining spousal support. South Dakota does not have a formula or guidelines for calculating spousal support, leaving significant discretion to trial judges.

Cohabitation Agreements as an Alternative

For South Dakota couples who cannot or choose not to establish a common law marriage in another state, a cohabitation agreement provides legal protection for property rights and financial responsibilities. Cohabitation agreements function similarly to prenuptial agreements and establish rules for property division, financial responsibilities, debt allocation, and other matters during the relationship and upon separation. Unlike marriage, cohabitation without a written agreement provides no automatic property rights. If an unmarried couple lives together for 20 years and one partner dies, the surviving partner is not guaranteed any property or benefits.

A cohabitation agreement must meet standard contract requirements: both parties must agree to terms, provide consideration, and sign the document. Having each party consult with independent legal counsel strengthens enforceability. Courts generally enforce cohabitation agreements as long as the agreement does not state that the couple's sexual relationship is among the benefits exchanged. Written agreements are far more enforceable than oral agreements or implied contracts, which courts may refuse to recognize due to lack of proof.

Costs of Common Law Marriage Divorce in South Dakota

As of March 2026. Verify current fees with your local clerk. Fees may vary slightly by county.

Frequently Asked Questions

Can I establish a common law marriage by living together in South Dakota?

No. South Dakota abolished common law marriage on July 1, 1959. No matter how long you live together, share finances, raise children, or present yourselves as married in South Dakota, you cannot establish a common law marriage under state law. The only way to become legally married in South Dakota is to obtain a $40 marriage license and complete a formal ceremony.

Will South Dakota recognize my common law marriage from another state?

Yes. Under SDCL § 25-1-38, South Dakota recognizes any marriage validly contracted outside the state. If you established a valid common law marriage in Colorado, Iowa, Kansas, Montana, Oklahoma, Rhode Island, Texas, Utah, or the District of Columbia, South Dakota treats your marriage identically to a ceremonial marriage, including all rights to property division and the requirement of a formal divorce to end it.

How do I prove my common law marriage exists for divorce purposes?

You must demonstrate the marriage was valid under the laws of the state where it was formed. Evidence includes joint tax returns filed as married, shared bank accounts or credit cards, mortgage documents listing both as married, insurance beneficiary designations, testimony from witnesses about your marital reputation, and any written declarations of marriage (such as Texas Declaration of Informal Marriage forms). Documentary evidence is stronger than testimony alone.

What is the filing fee for divorcing a common law marriage in South Dakota?

The filing fee totals $97, which includes a $50 base court filing fee, $40 automation surcharge, and $7 law library fee. An additional $50-$75 is required for service of process. Fee waivers are available for households earning at or below 125% of federal poverty guidelines by filing Forms UJS-022 and UJS-023.

How long does a common law marriage divorce take in South Dakota?

The minimum is 60 days due to the mandatory waiting period under SDCL § 25-4-34. Uncontested divorces typically finalize in 60-90 days. Contested divorces involving property disputes, custody battles, or spousal support disagreements take 6-18 months. The waiting period cannot be waived or shortened under any circumstances.

Do I need to prove fault to divorce my common law spouse?

Not necessarily. South Dakota offers no-fault divorce based on irreconcilable differences under SDCL § 25-4-2(7). However, the no-fault option requires either mutual consent or your spouse's default. If your spouse actively contests the divorce, you must prove one of six fault-based grounds: adultery, extreme cruelty, willful desertion, willful neglect, habitual intemperance, or felony conviction.

How is property divided in a common law marriage divorce?

South Dakota uses equitable distribution under SDCL § 25-4-44. Courts divide property fairly but not necessarily equally. As an all-property state, South Dakota allows division of all assets including premarital property and inheritances. Factors include marriage duration, each spouse's age and health, earning capacity, and contributions to property accumulation.

Are there residency requirements to file for divorce in South Dakota?

South Dakota has the most lenient residency requirements in the nation. Under SDCL § 25-4-30, you must be a South Dakota resident or active-duty military stationed in South Dakota at the time of filing. There is no minimum duration requirement. You could move to South Dakota and file for divorce the same day.

What parenting requirements apply to common law marriage divorces with children?

Both parents must complete a court-approved parenting course within 60 days of service under SDCL § 25-4A-32. The SMILE Program offers free online classes taking 4 hours minimum. No final decree can be entered until both parents file Certificates of Completion. Mediation is mandatory for custody disputes under SDCL § 25-4-56 unless domestic violence exceptions apply.

Can I get spousal support from my common law spouse?

Yes. Common law marriages receive identical treatment to ceremonial marriages for spousal support under SDCL § 25-4-41. Courts consider factors including marriage length, each spouse's earning capacity, standard of living during marriage, and contributions to the marriage. The duration is measured from when the common law marriage was established, not when you moved to South Dakota.

This guide provides general legal information about common law divorce in South Dakota and should not be construed as legal advice for any specific situation. For personalized guidance on your common law marriage divorce, consult with a South Dakota family law attorney who can evaluate your circumstances and the laws of the state where your marriage was established.

Author: Antonio G. Jimenez, Esq. | Florida Bar No. 21022 | Covering South Dakota divorce law

Last updated: May 2026