Custody and Support for Unmarried Parents
William Bentley • September 16, 2025
UNDERSTANDING CUSTODY AND CHILD SUPPORT FOR UNMARRIED PARENTS IN MASSACHUSETTS

Generally speaking, in Massachusetts, unmarried mothers automatically have “full legal” and “primary physical custody” until a court order changes it. The differences between “legal” custody and “physical custody” are two separate and distinct custody matters that must be analyzed separately in any custody matter.  

Legal Custody gives a parent the right to make significant decisions about a child's education, medical care, and religious upbringing

Physical Custody refers to a child's primary residence and who provides their daily care, with options for sole physical custody (one parent is the primary resident) or shared/joint physical custody (the child divides time between both parents' homes). Massachusetts courts generally favor joint physical custody because children tend to benefit from meaningful contact with both parents, but a judge will make a final decision based on the child's best interests. Factors considered include the child's age and needs, the parents' abilities to cooperate, their relationships with the child, and the child's wishes if old enough. 

In Massachusetts, the law is set up as follows for unwed parents of unborn children. 
For Mothers:
• Automatic Custody: You have sole legal and physical custody until a court order is issued. 
• Seeking Support: You can file a paternity action to establish paternity and seek child support from the father. 
• Formalizing Arrangements: You can file a court action to establish a court order for custody, parenting time, and child support if agreements cannot be reached. 
For Fathers
• Establishing Paternity:
You must establish paternity to gain legal rights and responsibilities. To establish legal paternity, a father must complete a Voluntary Acknowledgment of Parentage (VAP) or undergo a DNA test via a paternity action. Once paternity is established, both parents have the right to seek court orders for custody, parenting time (visitation), and child support, with the court's decisions based on the child's best interests. 
• Voluntary Acknowledgment of Parentage (VAP): You can sign a VAP to be listed as the father on the birth certificate and have your name appear. Be aware that signing a VAP is a significant legal decision with lasting consequences.
• Paternity Action: If you don't sign a VAP, a court can establish paternity, often through a DNA test, if the mother files a complaint. 
After paternity is established, you can file a court action to assert rights to custody, visitation, and to assume responsibility for child support.

Key Steps and Considerations for Both Parents:
1. Establish Paternity:
This is the foundational step for fathers to obtain legal rights. 
2. Reach an Agreement:
Discuss and agree on a parenting plan that includes child support and parenting time. 
3. Consider Mediation:
Mediation can be a cost-effective and less stressful way to reach agreements outside of court, according to the Massachusetts Council on Family Mediation. 
4. File a Court Action:
If you cannot reach an agreement, a parent can file a court action to establish legal orders for custody, visitation (parenting time), and child support, with the court's decision based on the child's best interests. 
5. Understand Court Involvement:
If you go to court, a judge will decide on the arrangements, so it is important to be clear about your desired outcome and present your case thoughtfully. 

Complaints to Establish Paternity
Once a Probate and Family Court judge becomes involved, however, all parents in Massachusetts have legal rights and obligations. For these rights and obligations to take effect, the biological relationship between a parent and child must be established. In most cases, establishing a mother’s relationship with the child is simple. Most hospitals around the world provide mothers with a birth certificate documenting the mother’s status. (It is very rare to encounter a birth certificate in which the mother is not identified.) When parents are legally married, Massachusetts law presumes that the husband of a child born during the marriage is the child’s biological father. 

If a father is unknown or absent – or if the father simply refuses to execute a Voluntary Acknowledge of Parentage – then a Probate and Family Court must enter a finding of paternity.
There are two ways this can happen:
1. Voluntarily, through a Voluntary Acknowledgment of Parentage
2. Involuntarily, through a Complaint to Establish Paternity and a DNA or other genetic test
For cases in which a father will not execute a Voluntary Acknowledgment of Parentage, the mother must file a Complaint to Establish Paternity. Typically, a Probate and Family Court will order the alleged father to submit to a DNA test to determine if he is the child’s biological father. Contact our attorneys to discuss more of your father's rights in MA.

Voluntary Acknowledgment of Parentage
The easiest way to determine a child’s father is for him to voluntarily admit their status as the child’s parents, typically by signing a Voluntary Acknowledgment of Parentage. Most hospitals in Massachusetts require unmarried parents to sign this form in order to put their names on the child’s birth certificate. (Hospitals will automatically include a husband’s name on the child’s birth certificate, where the law presumes that a child born during the marriage is the biological offspring of the husband.) For the mother, executing a voluntary acknowledgement of parentage at the hospital amounts to basic paperwork. For an unmarried father, signing the voluntary acknowledgement is a bigger step.

Fathers can also choose to sign a Voluntary Acknowledgment of Parentage outside of the hospital setting. While this avoids the need to have a court identify the father, it is not a trivial decision for a father to make: Once signed, the form can only be rescinded or challenged within a narrow set of circumstances, and only for a short period of time. Fathers who have an inkling of doubt should deeply consider their options before signing the form.

If an alleged father refuses to admit to being a child’s parent—whether it is because he is trying to avoid his obligations as a parent, or because he sincerely doubts that he is the father—the child’s mother can file a Complaint to Establish Paternity and get a court to intervene. By providing sworn testimony that explains why a putative father should be subject to a DNA test, she can urge the court to compel a putative father to provide DNA. This puts pressure on the alleged father: If he refuses to comply without a persuasive reason, the court can use his refusal as evidence that he is the father.
Most courts in Massachusetts use genetic marker testing to compare the DNAs of the mother, child, and alleged father.

If they are a match, the court will legally recognize the biological father as the child’s parent, endowing him with the rights and obligations that come with this designation. 
  
Once paternity has been established through a DNA test, the case begins to resemble a typical action for child custody and child support.

Complaints for Custody, Visitation and Support under 209C
When both parents are known, unmarried parents resolve child custody issues through a legal action under G.L. c. 209C—Massachusetts’ laws regarding children born out of wedlock—called a Complaint for Custody, Visitation and Support. While these actions are similar to child custody discussions in the divorce setting, there are several unique features that arise when the parents are not married. These differences can affect both child custody and child support.
As noted above, one important difference between parental rights for married and unmarried parents is the status prior to the entry of a court order for custody. Married parents are generally viewed as having equal parental rights prior to the filing of a divorce. For unmarried parents, G.L. c. 209C, s. 10 provides unmarried mothers with full custody of children until a court orders otherwise.

Another important difference for unmarried parents is that a judge must make specific findings of fact that justify his or her determination that shared physical or legal custody is in the best interest of the child for unmarried parents:
In awarding the parents joint custody, the court shall do so only if the parents have entered into an agreement … or the court finds that the parents have successfully exercised joint responsibility for the child prior to the commencement of proceedings pursuant to this chapter and have the ability to communicate and plan with each other concerning the child's best interests.
If the unmarried parents have never cohabitated, it may be difficult for the parties to convince a judge that the parents have “successfully exercised joint responsibility for the child” in the past. Proof of past cooperation is simply not required in divorce cases and highlights the difficulties that unmarried couples can face if they want to co-parent their child.
Depending on the case, the rule requiring courts to make special findings before ordering joint custody can seem either outdated or backwards or sensible. For cases in which a father has been completely absent from the child’s life prior to the court’s involvement, a cautious approach to custody is often warranted. When fathers have been active parents prior to the court’s intervention, however, it is important for the father to document his history of involvement to be avoid being treated as an inferior parent.

If We Didn’t Get Married, Do I Have to Pay Child Support?
The Complaint for Custody, Visitation and Support under 209C can also be used to resolve questions of child support. A parent’s obligations toward their child still exist, even if the child was not the result of a marriage. This allows a child’s mother to enforce her legal rights to child support payments from the child’s biological father.
Child support cases for unwed parents are strikingly similar to those that come up in traditional divorces: The court is called upon to determine the income of each one of the parents and the needs of the child in order to set the amount of regular support payments to be made to the parent with primary custody.
Child support is not identical for married and unmarried parents, however. For married parents, a court may only order retroactive child support going back to the date the Complaint for Divorce was served. There is no such restriction for unmarried parents, however. Indeed, the child support statute for unmarried parents, G.L. c. 209C, s. 10, requires courts to order retroactive child support all the way back to the birth of the child:
Upon the petition of a party, the court shall also order past support for the period from the birth of the child to the entry of the order, taking into consideration the parent's ability to pay … and any support provided by the parent during such period.
Retroactive child support is generally not ordered for any period when the unmarried parents cohabitated. For unmarried parents who did not live together, however, the retroactive provision of the statute can add complexity to the case.

Child Support and Custody Modifications
Unfortunately, even after a court sets rules on child custody and support for unwed parents, life can intervene in ways that make these court mandates difficult to follow. Whether because the child’s father loses his job, the mother gets terribly sick, or some other unforeseeable reason, it might be necessary to modify the court order to better reflect current circumstances.
Thankfully, child support and custody orders can be revisited and altered if a parent’s or child’s circumstances have materially changed since the entry of a judgment. Modifying such orders, however, is not always an easy task. Prevailing in a modification action often requires a persuasive showing that the changes in the life of a parent or child are sufficiently substantial enough to warrant a modification to the child support or custody orders.
If your child’s other parent is requesting a modification to the court order, it can drastically alter your plans and expectations, particularly when the original judgment was the product of hard-fought negotiations. Urging the court to adhere to the original terms of the order can protect both your interests and the interests of your child by preventing the other parent from skirting their obligations without a valid reason.

Enforcing Support and Custody Orders and Contempt of Court
Unless the court orders for child support and child custody have been successfully modified, each parent has an obligation to follow the plain terms of the orders. Failing to do so—especially deliberate failures—are serious violations of the court order. They not only impinge on the interests of the child; they can lead to contempt hearings.
Being held in contempt of court is no small matter. It typically comes with a fine but can also include a short stint in jail if the judge deems it appropriate.

WHY CHOOSE BENTLEY LAW GROUP, LLC TO REPRESENT YOU
A good lawyer will get you the rights you deserve in your case if you are unmarried. We have handled hundreds of cases where parents were not married and sought help.  At Bentley Law Group, LLC we navigated these choppy waters in both the courtroom and through difficult negotiations to get what our clients wanted in these heavily contested family cases.  We are caring practitioners who understand your situation because we not only represent you, but we also provide empathy and counseling every step of the way. You will never feel alone in your journey to get the rights you deserve.  So, when you are ready to take the next step, please call us for a free consultation, and get started in fighting for your child.

By William Bentley June 26, 2025
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By Ian Kahanowitz June 2, 2025
NAVIGATING THE DELICATE AND COMPLEX ALIMONY STANDARDS IN MASSACHUSETTS: LIVING IN A POST OPENSHAW AND CAVANAGH WORLD Many couples that are getting divorced in the Commonwealth of Massachusetts have to deal with the ever-changing laws of alimony and child support as put in place by the state’s highest courts. In the past three years, the landscape has changed so drastically that it is hard to find competent practitioners who can navigate through this difficult process. I have represented clients, and have gone to fight for them, who are just so confused and shocked regarding the whole daunting process of alimony. Even the negotiation process for settlement is a scary and nerve racking process because many lawyers don’t have a firm grasp of these new laws. In turn, many lawyers don’t do their clients justice when they are bargaining for alimony and the clients walk away with less due to a misunderstanding of the new laws. At Bentley Law Group, our attorneys are specifically trained to help our clients with a compass through the never ending maze of catacombs and pitfalls regarding alimony. We understand our clients and their desire for thorough and competent representation during this difficult process. As both a lawyer and tax practitioner I believe the best way to address the alimony minefield is to discuss the new laws of the Probate and Family Court system and the tax laws that are interwoven into each of these new laws. Many practitioners try to understand the new laws but struggle with the tax implications of alimony. The following is lengthy blog, but t Bentley Law Group, we feel it is necessary to inform clients and future clients about what they are facing in alimony cases. In the following material you will read,I will explore the complex interaction between two recent alimony cases, Openshaw v. Openshaw (2024) and Cavanagh v. Cavanagh (2022), which have disrupted alimony practice in Massachusetts against a backdrop of shifting tax rules and the state’s increasingly complicated Child Support Guidelines. THE OLD STANDARD OF ALIMONY AND ITS TAX IMPLICATIONS: THE 30%-35% STANDARD 2013-2019 The Massachusetts Alimony Reform Act (ARA), as set forth in M.G.L. c. 208, § 53, provides Massachusetts’s courts with specific parameters for calculating the amount of alimony in a divorce case. Specifically, the statute suggests that judges should “cap” alimony at an amount that should generally not exceed the recipient’s “need” or 30–35% of the difference in the parties’ gross incomes. Since 2017, however, interpreting the ARA has become increasingly complex, starting with the loss of tax deductibility for alimony payments in 2019, followed soon after by several Supreme Judicial Court (SJC) decisions that have increased the legal exposure of Massachusetts payors for higher support orders. As noted above, the ARA was conceived as a “cap” for alimony calculations, where the statute creates a presumptive ceiling on alimony based on the recipient’s “need” or 30–35% of the difference in the parties’ gross incomes. Until 2019, alimony was tax-deductible for state and federal tax purposes, meaning a former spouse could deduct alimony payments from their taxable income. Deductibility allowed many high-earning alimony payors to recover more than 40% of their alimony payments through tax savings based on their tax bracket. In practice, deductibility allowed the ARA’s language to act less like a “cap” and more like a formula, with most alimony cases resolving with an order calculated at 30–35% of the difference in the parties’ gross incomes between 2013 and 2019. In essence tax deductibility was a win-win in alimony cases. Most alimony payors, who typically generated earnings at higher tax brackets, received a substantial tax refund through tax deductibility. Meanwhile, most alimony recipients, who typically fell within substantially lower tax brackets, were often content to pay the taxes on the alimony they received at their lower tax rates, since paying the taxes generally meant higher alimony awards. A DRASTIC CHANGE IN THE TAX LAWS In 2019, this delicate balance was thrown off by the federal Tax Cuts and Jobs Act (TCJA), which passed in 2017 and became law two years later. Under the TCJA, alimony payments would no longer be deductible for federal tax purposes in new divorce cases starting in 2019. By tax year 2022, Massachusetts followed suit, eliminating state deductibility. The impact of TCJA continues to be felt in Massachusetts as courts grapple with applying the ARA’s 30–35% “formula” in a world where alimony payors can no longer write off payments to their former spouses. In many alimony cases, attorneys submitted worksheets to judges that reverse-engineered the ARA’s 30–35% calculation into an after-tax number. The reality is a shocking as most alimony calculations end up between a 20% to $25% figure that is far below the old 30% to 35% standard A FIRE STORM HITS ALIMONY AND CHILD SUPPORT IN THE CAVANAGH CASE The Supreme Judicial Court (“SJC”) changed the landscape of alimony and child support in Massachusetts in the seminal case of Cavanagh v. Cavanagh, 490 Mass. 398 (2022) (“Cavanagh”). In its massive scope contained in the written opinion, the SJC issued one of its lengthiest family law decisions to date, and introduced a new method family court judges must apply when calculating alimony and child support. In so ruling, the Court provided guidance about what types of income must be included and excluded in child support calculations. The crux of the SJC’s decision was that is was an abuse of discretion for a trial judge to calculate child support first so as to deny alimony based on the trial judge’s understanding that, under G.L. c. 208, § 53(c)(2), the same income relied on to calculate child support cannot be used also to calculate alimony. Many within the family law practice consider the Cavanagh decision a radical decision, and many judges and lawyers are confused about how to proceed forward on the issues and how to apply the new rules. CAVANAGH’S NEW CALCULTIONS FOR ALIMONY AND CHILD SUPPORT: SQUEEZING EVERY NICKEL OU OF THOSE WHO ARE JUDGED TO PAY ALIMONY Prior to Cavanagh, many family law judges and practitioners believed that child support should be calculated before alimony, and alimony was to be awarded only if there was excess income not used in the child support calculation. The Cavanagh Court rejected that approach, and held that “[w]here, as here, a judge chooses to calculate the child support and then denies alimony on the basis that § 53(c)(2) prevents the use of the payor’s income to calculate alimony, the judge has abused her discretion because she has failed to do the fact-specific analysis of the family’s circumstances required by § 53(a).” Id. at 409. The SJC then introduced a new three-step method that must be followed in cases in which both alimony and child support are involved. The method is as follows: (1) Calculate alimony first, in light of the statutory factors enumerated in § 53(a) and the principle that, with the exception of reimbursement alimony, the amount of alimony should be determined with reference to the recipient spouse’s need for support to allow the spouse to maintain the lifestyle enjoyed prior to the termination of the parties’ marriage. Then calculate child support using the parties’ postalimony incomes. (2) Calculate child support first. Then calculate alimony, considering, to the extent possible, the statutory factors enumerated in § 53(a). We acknowledge that in the overwhelming majority of cases, the calculation of child support first will preclude any alimony being calculated in this step. (3) Compare the base award and tax consequences of the order that would result from the calculations in step (1) with those of the order that would result from the calculations in step (2), above. The judge should then fashion an order which would be the most equitable for the family before the court, considering the mandatory statutory factors set forth in G. L. c. 208, § 53(a), and the public policy that children be supported as completely as possible by their parents’ resources, G. L. c. 208, § 28, and then fashion the order such that it reflects, or alternatively is responsive to, those considerations. Where the judge chooses to issue an order pursuant to the calculations in step (2) or otherwise that does not include any award of alimony, the judge must articulate why such an order is warranted in light of the statutory factors set forth in § 53(a).[2] The SJC did not provide any guidance regarding how judges are to determine which order will be “the most equitable” under this new method. Moreover, Step 3 of the new method suggests that litigants will need to retain tax experts to calculate and then present to the court the tax consequences of the different potential alimony and child support orders, and the parties’ expected net after-tax incomes under both scenarios. Further, as a matter of public policy, if the parties cannot afford or otherwise fail to hire the appropriate tax experts, support awards calculated using the first test may be so high that they discourage a payor’s continued employment or future employment because of the harshness of the calculations. Types of Income to be Included in Child Support Calculations The Cavanagh Court considered the following different types of income, and determined whether they should be included in calculating child support: • Interest and dividends: Again referencing the CSG, the SJC explained that interest and dividends are to be included within income without qualification; that is, regardless of whether they are a regular source of income. Accordingly, the trial judge erred by excluding income from the father’s savings and 401k plan to the extent such income included interest and dividends. • Capital gains: Noting that the CSG state that capital gains need only be treated as a regular source of income where they relate to “real and personal property transactions,” the SJC clarified that they should otherwise be included in income even when not regular. The trial judge therefore erred by excluding capital gains on the father’s savings and 401k plan to the extent they included capital gains on transactions other than those related to real and personal property. • Income from second job: Insofar as the parties’ separation agreement provided that income from the father’s second job “shall not be utilized to calculate any future support obligations, whether child support or alimony,” the SJC held that this provision was void because “[p]arents may not bargain away the rights of their children to support.” at 422 (internal citation omitted). It remained within the trial judge’s discretion to consider this income when calculating child support. • Employer contributions to retirement accounts: In an issue of first impression in the Commonwealth, the SJC held that employer contributions to retirement accounts constitute income for purposes of calculating child support. The SJC found persuasive the reasoning of a Pennsylvania court, which held, “if we were to determine that an employer’s matching contributions are not income, it would be possible for an employee to enter into an agreement with his employer to take less wages in exchange for a heightened matching contribution. This would effectively permit an employee to shield his income in an effort to reduce his child support obligation.” Id. at 424 (internal citation omitted). The trial judge, therefore, did not abuse her discretion in including these contributions in the father’s income. Notably, the SJC did not explain how it is equitable to order a payor to pay support in present dollars on income that the payor cannot access without penalty until the payor reaches retirement age. • Employer contributions to health savings accounts: The SJC held that because employer contributions to health savings accounts (“HSAs”) are considered part of an employee’s compensation package, they properly constitute income for purposes of calculating child support. Again, the trial judge did not abuse her discretion in including these contributions in the father’s income. In a recent decision, the Appeals Court has already relied on the Cavanagh decision for the proposition that “principles restricting consideration of income derived from assets received in divorce for purposes of alimony have ‘no bearing’ on consideration of such income for purposes of child support.” Duval v. Duval, 101 Mass. App. Ct. 752, 763 (2022) (holding that on remand the trial court was free to consider husband’s dividend income from his business interest in connection with the support of the children). SUMMING UP CAVANAGH Three years after the decision it remains to be seen how closely trial judges and the family law bar will analyze and apply the Cavanagh methodology for calculating alimony and child support. More guidance from the SJC and the Appeals Court will be needed as to how to determine which approach to support is “most equitable,” and how to deal with the tax consequences of different awards. As every lawyer and judge knows, judges have broad discretion in applying the law. A calculation in one court might not be the same in another family court in Massachusetts, due to the analysis by the sitting judge. Until such guidance is received, Cavanagh remains open ended and is subject to constant squabbles among lawyers and judges alike. MORE DIESEL FUEL ON THE FIRE: ONE’S LIFESTYLE AND SAVINGS: ENTER OPENSHAW To confuse the delicate balance of alimony and the changing dynamics since Cavanagh even more, the SJC shed new light on what it means to "live" a certain lifestyle as a married couple and how those habits should be reflected in post-divorce alimony. The case, Openshaw v. Openshaw (2024), revolved around a couple who, during their marriage, didn't just focus on living well but also on saving wisely. When their marriage came to an end, the question arose: should their habit of saving be considered part of their marital lifestyle for the purposes of determining the appropriate amount of alimony? The court's answer was a resounding YES. In essence, the court argued that saving isn't just a financial strategy; it's a way of life. For the Openshaws, who enjoyed a generous annual income far exceeding their living expenses, setting money aside wasn't merely about preparing for a rainy day. It was a consistent part of their lifestyle. The Openshaw decision allows for savings to be considered a part of an alimony recipient’s needs if: (1) there is a clear record and pattern of saving by the parties during their marriage; and (2) there is sufficient income post-divorce to allow both parties to maintain the standard of living enjoyed during the marriage. Although the tension between “need” versus “ability to pay” is nothing new with regards to alimony in Massachusetts, the now clear precedent of including savings in a recipient’s “need” will certainly change the way that courts and litigants will approach alimony cases for high wage earners going forward. The implications of this are significant. When determining the need for support, courts can look beyond current spending habits to consider the entire scope of how a couple lives. This includes saving for the future. This means that in divorces where both parties have the financial means, both can be expected to maintain not just the living standards they enjoyed while married but also the saving habits that were part of their marital lifestyle. CONCLUDING THOUGHTS The information provided in this blog is to educate the lay person what to expect in alimony cases. The issues continue to be open ended and the broad discretion of the judges has courts ruling differently on the same issues. Give us a call at Bentley Law Group and consult with a family law expert and get the representation you deserve.
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