Washington Senate Bill 5993 Medical Debt Interest in Washington: Consumer Protection and Institutional Tradeoffs

Illustrative Example

Washington State’s SB 5993 would cap interest on medical debt at 1% simple interest per year, including post-judgment interest, and prohibit interest during certain charity care review periods. On its face, the policy is straightforward: reduce the rate at which unpaid medical bills grow.

For voters, the consumer benefit is easy to grasp. The institutional implications are more complex.

This analysis outlines both.

What the Bill Changes

SB 5993 would:

• Cap interest on new medical debt at 1% simple interest annually

  • on new medical debt as defined in RCW 19.16.100.

• Apply the cap to both pre- and post-judgment balances

• Prohibit interest during any period when the hospital has not completed required charity care screening and initial determination in compliance with RCW 70.170

• Require refunds of interest if a debt is later reduced, waived, or found unenforceable

The bill does not:

• Cap hospital pricing

• Reduce underlying medical bills

• Eliminate collections

• Prohibit lawsuits for unpaid balances

It addresses only how quickly debt grows after care is delivered.

Direct Impact on Patients

For households carrying medical debt, the practical effect is reduced compounding.

An Illustrative Example:

A $5,000 unpaid balance:

• At 9% over five years ≈ ~$2,250 in interest

• At 1% over five years ≈ ~$250 in interest

The policy limits the “snowball effect” of long-term unpaid balances. For financially vulnerable households, that can materially reduce long-term burden.

It also increases the importance of charity care determinations, since interest must pause during those review periods and be refunded if balances are reduced.

Public Hospital Districts: Governance and Financial Sensitivity

Public Hospital Districts (PHDs) are publicly governed entities funded primarily through operating revenue, supplemented in some cases by voter-approved levies or bonds.

Potential Institutional Effects

1. Reduced recovery from aged receivables

Interest on unpaid accounts offsets:

• Inflation

• Administrative collection costs

• Cost of capital

• Default risk

At 1% simple interest, hospitals cannot meaningfully price for these factors.

While interest income is not a primary revenue driver, across large receivable portfolios it contributes marginal recovery.

2. Liquidity considerations

Hospitals operate with thin margins. When unpaid accounts cannot keep pace with inflation or borrowing costs, long-duration receivables lose real value.

3. Administrative burden

The refund requirement introduces:

• Retroactive recalculation

• Accounting adjustments

• Compliance tracking

For smaller or rural public districts, these operational requirements may be proportionally heavier.

4. Behavioral adaptation

To reduce exposure, public districts may:

• Encourage earlier payment plan enrollment

• Tighten documentation around charity care

• Shorten timelines before accounts transition to collections

For voters in PHDs, this could indirectly influence levy discussions or capital planning if operating margins tighten.

Private Hospitals: Different Constraints, Similar Incentives

Private hospitals — whether nonprofit systems or for-profit providers — face:

• Bond covenants

• Margin expectations

• Credit rating considerations

The same 1% cap applies.

Likely institutional responses:

• Accelerated collection workflows

• More standardized payment plan structures

• Increased reliance on third-party collections

• Greater emphasis on upfront financial screening

Because carrying aged debt yields minimal return, institutions may prioritize faster resolution.

The bill does not differentiate between public and private providers; the compliance burden is shared.

Broader Economic Context

Medical debt interest historically functions as a recovery mechanism, not a profit center. Hospitals provide services before payment and effectively extend unsecured credit.

When statutory caps reduce interest recovery below prevailing borrowing rates, the financial risk does not disappear — it shifts to:

• Operating margins

• Administrative practices

• Tax-supported mechanisms (in public districts)

This is not unique to healthcare; it is a structural response to regulated credit environments.

What the Bill Achieves

• Reduces compounding burden on patients

• Aligns interest policy with consumer protection trends

• Strengthens charity care enforcement through interest pause and refund mechanisms

What It Does Not Address

• Underlying healthcare pricing

• Medicaid reimbursement gaps

• Insurance reimbursement shortfalls

• Labor and supply chain inflation

• Hospital capital financing costs

Medical debt interest is one piece of a broader hospital finance ecosystem.

Public vs. Private: Where the Distinction Matters

Dimension	Public Hospital District	Private Hospital
Governance	Elected commissioners	Corporate board
Voter leverage	Direct electoral influence	Indirect market pressure
Ability to offset financial pressure	Levies, bonds	Operational efficiency, pricing strategies
Sensitivity to margin compression	Often high	Varies by system

For voters inside a public hospital district, financial implications may intersect with governance conversations.

For voters served by private hospitals, the consumer protections apply, but institutional adaptation occurs outside electoral oversight.

A Balanced Assessment

SB 5993 reduces the risk that medical debt becomes financially catastrophic due to compounding interest.

At the same time, it constrains how hospitals recover the cost of carrying unpaid balances. Institutions are likely to adjust operationally in response.

The policy question is not whether the bill benefits patients — it clearly does in terms of debt growth.

The broader question is how healthcare institutions recalibrate financial practices under the new statutory framework.

Understanding both sides is essential.