California Elder Law  ·  Guide for Married Couples Facing Nursing Home Medi-Cal

Reducing Medi-Cal Share of Cost When a Spouse Enters a Nursing Home

How Probate Code §3100 Petitions Can Help the Spouse at Home Keep More Income

When one spouse enters a skilled nursing facility and qualifies for Medi-Cal long-term care, the county calculates a monthly “share of cost” from the institutionalized spouse's income. Social Security, pension income, IRA distributions, annuity payments, and other retirement income titled in that spouse's name will be treated as income available to pay toward the cost of care. For the spouse at home, the result can be devastating. The standard amount allowed is $4,066.50 per month, and in many California households that is not enough to maintain the mortgage or rent, property taxes, insurance, utilities, food, transportation, and medical expenses of the spouse who remains at home. A California Probate Code §3100 petition may allow the Probate Court to order that more of the couple's income be kept by the spouse at home, thereby reducing the Medi-Cal “share of cost” paid to the nursing home.

1. What Is Medi-Cal “Share of Cost”?

The Medi-Cal “share of cost” is the portion of the institutionalized spouse's monthly income that must be paid to the nursing home as the resident's contribution toward the cost of care. It is calculated by the county Medi-Cal eligibility office once the institutionalized spouse has been approved for long-term care Medi-Cal. The arithmetic is straightforward in concept: the county takes the institutionalized spouse's gross monthly income (see the “name on the check” rule below), subtracts the $35 Personal Needs Allowance, and subtracts an income allocation to the spouse at home up to the Minimum Monthly Maintenance Needs Allowance (MMMNA) of $4,066.50 per month for 2026. Whatever is left is the “share of cost”.

Private Pay Is Not “Share of Cost”

Many families confuse the two. Before Medi-Cal approval, the family pays the nursing home's private-pay rate, which in California now exceeds $14,000 per month in many facilities. After Medi-Cal approval, the family no longer pays the private rate; the State pays the facility, and the institutionalized spouse contributes the share of cost. Without proper planning, however, that share of cost can still be $3,000 to $5,000 per month or more — and it comes out of the same household income the spouse at home depends on. This page is about reducing that monthly share of cost, not about negotiating private-pay rates.

2. Why the Standard MMMNA Often Isn't Enough

The MMMNA is the floor below which the spouse at home is protected. In 2026 the figure is $4,066.50 per month. The spouse at home may keep his or her own income plus an allocation from the institutionalized spouse sufficient to bring the spouse at home up to that figure. For households with modest expenses, the standard MMMNA may be adequate. For most California households, it is not. By the time property taxes, homeowner's insurance, utilities, food, prescription costs, healthcare premiums, and transportation are accounted for, the typical Ventura County household budget for one person comfortably exceeds $4,066.50 per month — often by several thousand.

The problem is compounded by the so-called “name on the check rule.” Medi-Cal generally treats income as belonging to the spouse whose name appears on the check — Social Security, pension, IRA or 401(k) distribution, Thrift Savings Plan distribution, military retirement, annuity payment, or otherwise. When the institutionalized spouse's name is on the larger income streams, that income is presumptively his or hers and flows toward the share of cost, regardless of who has historically used the income to run the household. The point is particularly consequential for retirees, whose largest income streams are typically titled in the retiree's name alone. It is also a trap for couples who have always treated their income as joint: the fact that a Social Security or pension check is direct-deposited into a joint account is irrelevant to Medi-Cal. The county looks at whose name is on the check.

Without a court order, the spouse at home has no enforceable claim to keep that income, even when the loss leaves the spouse unable to be supported in the couple's accustomed standard of living.

3. How a §3100 Petition Reduces “Share of Cost”

A petition under California Probate Code §3100 asks the Probate Court to order that more of the institutionalized spouse's income be allocated to the spouse at home. Because share of cost is calculated as income minus allocations to the spouse at home and the Personal Needs Allowance, increasing the allocation directly reduces the share of cost. There is no statutory cap. In appropriate cases, courts have ordered allocations that result in the spouse at home retaining substantially all the combined household income, with the institutionalized spouse retaining the $35 Personal Needs Allowance and contributing only the remaining required amount, if any, toward the share of cost.

The evidence required is detailed: a comprehensive household budget, documentation of the couple's standard of living, evidence of any extraordinary or non-discretionary expenses, and a clear demonstration that the standard MMMNA is inadequate. The at home spouse should expect the court to scrutinize the budget and to disallow expenses that read as discretionary or insufficiently documented.

What Income Can Be Reallocated?

A §3100 order can reallocate any income titled in the institutionalized spouse's name, including:

• Social Security retirement and disability benefits
• Pensions — private, public, federal civil service, military retirement
• IRA and 401(k) distributions
• Thrift Savings Plan (TSP) distributions
• Annuity payments
• Other periodic retirement income

4. 2026 Reference Figures

Item	2026 Amount	Authority
Single Applicant Asset Limit	$130,000	W&I Code §14005.7; DHCS All County Welfare Directors Letter
Married Couple Asset Limit	$195,000	W&I Code §14005.7; DHCS All County Welfare Directors Letter
Community Spouse Resource Allowance (CSRA)	$162,660	W&I Code §14006(c); 22 CCR §50402
Minimum Monthly Maintenance Needs Allowance (MMMNA)	$4,066.50	22 CCR §50658; 42 U.S.C. §1396r-5(d)
Average Private Pay Rate (APPR)	$14,440	DHCS All County Welfare Directors Letter
Personal Needs Allowance	$35	22 CCR §50605
Family Member Allocation Base	$2,644	42 U.S.C. §1396r-5(d)(1)(C); DHCS guidance

Asset limit, CSRA, MMMNA, and APPR figures are adjusted annually by DHCS through All County Welfare Directors Letters. Always confirm the current applicable figure at the time of application.

5. Court Order vs. Medi-Cal Fair Hearing

Medi-Cal has an administrative proceeding called a “fair hearing.” This is an administrative hearing before an administrator of Medi-Cal. However we find that they rarely, if ever, allow as much income to be kept by the in-home spouse that a probate judge allows. An administrative fair hearing officer may increase the MMMNA only on a showing of exceptional circumstances resulting in significant financial duress. That standard is, in practice, a near-destitution test: the spouse at home must typically demonstrate that the standard allowance leaves the household unable to meet basic survival expenses, and the relief granted is generally small.

The Probate Code §3100 petition operates under a fundamentally different standard. It invokes the Probate Court's equitable authority over spousal property and is informed by California family law principles tied to the marital standard of living rather than a survival floor. The court's inquiry is not whether the household can scrape by on the standard MMMNA but whether the standard MMMNA is adequate to maintain the lifestyle the spouses had built together. The standards are materially different. In our experience, relief obtained through a §3100 petition is almost always substantially greater than what an administrative fair hearing on the same facts would yield.

What About Increasing the CSRA?

Where the spouse at home's reasonable income needs cannot be met from the spouses' combined income even after a maximum MMMNA allocation, a court may also order an increase in the Community Spouse Resource Allowance (“CSRA”), allowing the spouse at home to retain countable resources above the $162,660 baseline. In practice, however, we rarely find it necessary to go to court to increase the CSRA. The §3100 petition's reduction of share of cost is almost always adequate to get more income to the spouse at home, and we have other tools to reduce countable assets to bring the household within the $162,660 limit without going to court.

6. Worked Example: A Typical Married Couple

7. Statutory Authority

California Probate Code sections 3100 through 3154 authorize a married person to petition the Probate Court for an order regarding the community property, the quasi-community property, or the separate property of either spouse, where one spouse has lost legal capacity, is absent or otherwise unavailable, has neglected or refused to join in the proposed action, or where authorization is otherwise required by law. The procedure is freestanding: it does not require a conservatorship, a power of attorney, or any other prior order, and the court's authority extends to substantially the full range of property transactions a competent spouse could effectuate.

Cal. Prob. Code § 3100

Subject to the limitations and conditions of this part, the court may, on petition under this part, authorize a proposed transaction involving the community property, quasi-community property, or separate property of the spouses or either of them.

The statute is broad by design. The Law Revision Commission comments to the original 1990 enactment make clear that the Legislature intended §3100 to provide a flexible, court-supervised alternative to conservatorship for spousal property transactions, with particular attention to the circumstances of long-term care planning. In the three and a half decades since enactment, the procedure has become the principal vehicle by which California elder-law practitioners obtain court-ordered share-of-cost reductions for the spouses of Medi-Cal nursing home residents.

The federal foundation is the Medicare Catastrophic Coverage Act of 1988, which establishes a floor below which states may not push a community spouse: a minimum monthly income allowance and a minimum allocable resource allowance. California has implemented these protections through Welfare and Institutions Code sections 14005.7 and 14006, with annually adjusted figures published in DHCS All County Welfare Directors Letters. The federal floor, however, is exactly that — a floor. When the spouse at home's actual reasonable needs exceed that floor, the spouse is entitled to seek additional protection through state-law mechanisms, of which §3100 is the most powerful.

8. Capacity, Absence, and Refusal

Probate Code §3100 is available in three principal circumstances: where the spouse whose joinder would otherwise be required has lost legal capacity, is absent, or has neglected or refused to act. Each circumstance presents distinct evidentiary and procedural considerations.

Loss of Capacity

The most common situation in Medi-Cal long-term care planning is loss of capacity. The petitioning spouse must establish that the institutionalized spouse lacks the legal capacity to consent to the proposed transaction. The standard is California's general capacity standard for transactional decisions, informed by Probate Code §811 and proved through medical evidence — typically a declaration or letter from the institutionalized spouse's treating physician describing the diagnosis, the cognitive findings, and the inability to understand and weigh the relevant transaction.

The most frequent diagnostic predicates are dementia (Alzheimer's disease, vascular dementia, Lewy body dementia, frontotemporal dementia), advanced Parkinson's disease, severe stroke, anoxic brain injury, traumatic brain injury, end-stage organ failure with associated cognitive decline, and other conditions producing persistent inability to manage one's own affairs.

Absence

Where the spouse cannot be located despite diligent search, or is otherwise legally absent within the meaning of the statute, the petition may proceed on a showing of absence. Pure-absence cases in the long-term care context are rare and almost always overlap with capacity issues.

Neglect or Refusal

Where the spouse has refused to act or to join in a transaction the petitioning spouse considers necessary, the §3100 procedure provides an alternative to dissolution of the marriage or to forcing the issue through community property law. This circumstance arises occasionally in long-term care planning where there is conflict between the spouses or where one spouse, though competent, refuses to participate in protective planning.

9. Procedure and Timing

The petition is filed in the Probate Court of the county of residence and is governed by Probate Code §§3120 through 3154 and applicable local rules. The petition must include a verified statement of the relevant facts, supporting declarations including the medical evidence of capacity, a comprehensive budget and supporting documentation, and proposed orders. Notice is required to the other spouse and, where Medi-Cal eligibility is implicated, to the Department of Health Care Services.

A guardian ad litem is typically appointed for the institutionalized spouse to evaluate the petition and report to the court. The hearing is set at the court's convenience, generally 60 to 90 days from filing. If granted, the order is final and operates as ongoing authority for the relief specified.

In our practice, we have carried §3100 petitions to success in California probate courts throughout the State. Almost all of our court appearances are by way of video (usually Zoom). This has made these matters substantially easier to schedule and complete.

10. DHCS Notice and Opposition

Where the relief sought in a §3100 petition affects the calculation of Medi-Cal share of cost or eligibility, notice must be served on the Department of Health Care Services. DHCS may, in its discretion, appear and oppose the petition. In our experience, DHCS has never opposed one of our petitions. However, we have heard of them opposing the petition in some rare cases.

11. Why a Court-Approved Plan Often Works for Everyone

Families sometimes assume that the nursing home will oppose any strategy that reduces share of cost. In our experience, this concern is misplaced. The nursing home is not a party to a Probate Code §3100 petition. The proceeding is between the petitioning spouse, the institutionalized spouse, and the Department of Health Care Services. The facility's practical interest is being paid reliably each month, and a successful petition produces exactly that result — a Medi-Cal-funded resident with a clearly determined share of cost — rather than a family disputing share-of-cost arithmetic at every monthly statement.

In our experience, skilled nursing facilities often prefer a court-approved share-of-cost arrangement over an uncertain or disputed one. A very high share of cost is not helpful to the facility if the family cannot realistically pay it. A clear, court-ordered allocation creates clarity for everyone: the spouse at home knows what income may be retained, the facility has a lawful and reliable Medi-Cal payer source, and the family avoids ongoing disputes about an unaffordable monthly obligation.

12. Common Share-of-Cost Mistakes

The most frequent and costly mistakes families make in connection with the Medi-Cal share of cost are these:

1. Paying the calculated share of cost without asking whether it can be reduced. The county's share-of-cost calculation is not the final word. A §3100 petition can reduce it substantially, often by thousands of dollars per month. Many families simply pay what they are told and never investigate whether reduction is available.
2. Assuming income is “ours” because it goes into a joint account. Many spouses at home assume that because a pension or Social Security check is direct-deposited into a joint checking account, the income is shared and can be used freely for household expenses. Medi-Cal does not look at the bank account. It applies the “name-on-the-check” rule. If the pension or Social Security check is in the institutionalized spouse's name, Medi-Cal counts it toward the share of cost. A §3100 petition is the mechanism that legally gives that income to the spouse at home.
3. Confusing private pay with share of cost. Before Medi-Cal approval, families pay the facility's private-pay rate (often exceeding $14,000 per month). After Medi-Cal approval, the family no longer pays the private rate; instead, the institutionalized spouse contributes only the share of cost based on income. Families sometimes assume the high private-pay bill is what they will pay forever, without realizing that Medi-Cal payment converts the obligation to a much lower (though still potentially significant) share of cost.
4. Assuming the nursing home will oppose any reduction. Nursing homes are not parties to §3100 petitions. The proceeding is between the spouses and DHCS. Facilities generally prefer a clear, court-approved share-of-cost arrangement over an ongoing dispute about what the family can actually afford.
5. Failing to document the household budget. A petition with a thinly supported budget will yield a thinly supported order, if it is granted at all. We routinely require six months of bank and credit card statements, 12 months of utility and tax records, and current insurance and medical premium documentation before drafting the petition.
6. Treating the §3100 petition as a stand-alone strategy. The petition must be coordinated with the structuring of retirement accounts, the timing of the Medi-Cal application, the disposition of any non-exempt assets above the asset limit, and the broader estate plan. A §3100 order obtained in isolation often fails to deliver the full protection it could have delivered if integrated with the rest of the plan.

13. Frequently Asked Questions

How is the Medi-Cal nursing home “share of cost” calculated?

The Medi-Cal “share of cost” is the portion of the institutionalized spouse's monthly income that must be paid toward the cost of nursing home care each month. The county takes the institutionalized spouse's gross monthly income, subtracts the $35 Personal Needs Allowance, and subtracts an allowance to the spouse at home up to the Minimum Monthly Maintenance Needs Allowance (MMMNA) of $4,066.50 per month in 2026. Whatever remains is the share of cost paid to the nursing home each month.

Can the Medi-Cal “share of cost” be reduced for a married couple?

Yes. Under California Probate Code §3100, a Probate Court may order that more of the institutionalized spouse's income be allocated to the spouse at home, reducing the share of cost paid to the nursing home. The court is not bound by the standard MMMNA of $4,066.50 and may order an allocation sufficient to maintain the household's reasonable living expenses. In appropriate cases, the order can reduce share of cost by thousands of dollars per month.

Can the spouse at home keep the nursing home spouse's Social Security and pension?

Under standard Medi-Cal rules, the spouse at home may retain only enough of the institutionalized spouse's income to bring the spouse at home to the Minimum Monthly Maintenance Needs Allowance — $4,066.50 per month in 2026. Anything above that figure flows to the share of cost paid to the nursing home. By granting a Probate Code §3100 petition, however, a Probate Court judge may order that the spouse at home retain a substantially larger portion of the combined household income, including Social Security, pension, IRA distributions, Thrift Savings Plan distributions, and annuity payments.

Can a §3100 petition protect IRA, TSP, or annuity income from share of cost?

Yes. The Medi-Cal name-on-the-check rule treats income as belonging to the spouse whose name appears on the check or distribution. A §3100 petition allows the Probate Court to order that all or part of that income be allocated instead to the spouse at home. This includes IRA distributions, 401(k) distributions, Thrift Savings Plan distributions, military retirement, and annuity payments titled in the institutionalized spouse's name.

How long does a share-of-cost reduction petition take in California?

Most uncontested §3100 petitions in California resolve within 60 to 90 days from filing, depending on the calendar of the relevant Probate Court. The advent of video court appearances has made these matters substantially easier to carry through to success.

Does the institutionalized spouse need a conservator for a §3100 petition?

No. One of the principal advantages of the §3100 procedure is that it operates independently of conservatorship. The spouse at home files the petition in his or her own name, and the court may order action with respect to the institutionalized spouse's property without the appointment of a conservator. This avoids the cost, intrusiveness, and ongoing reporting obligations of conservatorship.

Will the Department of Health Care Services oppose the petition?

DHCS receives notice of §3100 petitions when Medi-Cal eligibility is implicated and may, in its discretion, appear and oppose the requested relief. In our firm's experience, DHCS has never opposed one of our petitions, although we have heard of opposition in some rare cases.

How much does a §3100 petition cost?

Fees vary with complexity and the level of opposition anticipated. We provide a written engagement letter with a clearly defined fee structure at the outset of every matter. The cost of a successful §3100 petition is in nearly every case a small fraction of the share-of-cost reduction it secures.

14. Related California Medi-Cal Planning Guides

• Medi-Cal Nursing Home Planning2026 asset limits, the CSRA, the MMMNA, exempt property, gifting and the look-back, and estate recovery — the firm's principal Medi-Cal practice page.
• California Living TrustsHow a properly structured revocable trust interacts with Medi-Cal eligibility planning and estate recovery.
• Trust Administration in CaliforniaPost-death administration of trusts where Medi-Cal benefits were received during life.
• ConservatorshipsWhen a §3100 petition is and is not an alternative to conservatorship of the estate.
• Estate Planning for IRAsCoordinating beneficiary designations, required minimum distributions, and Medi-Cal income treatment.
• Probate in CaliforniaWhen probate is and is not necessary, and how Medi-Cal estate recovery interacts with probate administration.

15. How Staker Rodriguez Law LLP Can Help

Our firm has been representing California families in Medi-Cal long-term care planning for over 35 years. We have carried to success Probate Code §3100 petitions in probate courts throughout the State of California. Our practice integrates the share-of-cost reduction with the broader estate plan, the timing and structure of the Medi-Cal application, the structuring of retirement accounts, the disposition of non-exempt assets, and the long-term protection of the family residence. The §3100 petition is one tool among many; in the right case, it is the most important tool for keeping money in the household instead of paying it to the nursing home as share of cost.

If your spouse is in a nursing home on Medi-Cal, or about to be, and the share of cost will leave you unable to be adequately supported, we would be glad to evaluate whether a §3100 petition is appropriate for your circumstances and to walk you through what it would look like in your specific situation.

Last reviewed and updated: May 7, 2026  ·  Reviewed by: Kevin G. Staker, Attorney at Law  ·  Staker Rodriguez Law LLP, Camarillo, California