How to Calculate a Fair Price and the Cheapest Payment Plan on a $13,400 Hospital Bill: CMS Ratio, 7.5% AGI Test, and 4-Way Cost Comparison
Say you open the mail this week and the hospital's statement reads $13,400. Your first instinct is to ask what the monthly payment is. That question is how people end up paying $13,400, or more, for care the hospital may have delivered at a fraction of that cost.
The right order is different. You estimate what the care plausibly cost, negotiate to a target, check whether charity care applies, and only then compare payment options on the smaller number. Below I run that sequence on a $13,400 example. Every figure in the worked example is an illustration I constructed, not your bill. The steps are what matter, because your inputs will change the answer.
The Backdrop: Why Your Monthly Budget Is the Constraint Right Now
The Bureau of Labor Statistics' "Major Economic Indicators" page currently shows CPI up 0.4% in August 2026, unemployment at 4.1%, payroll employment up 162,000 (preliminary), and average hourly earnings up $0.10 (preliminary). Prices rose 0.4% in a month while pay rose about a dime an hour. A payment that looked comfortable in the spring may not fit in the fall.
NerdWallet's September 18 mortgage rate update ("Mortgage Rates Today, Friday, September 18: No Change") says rates took a breather as bond markets digested the week's Fed news. I read that as a stable window for getting loan quotes, not a promise that rates stay put. Personal loan and card pricing is set separately from mortgage rates. But if you plan to finance, comparing quotes this week means you're comparing against a quiet market.
Unemployment at 4.1% also means job loss is a real risk to plan around. It's a reason to weigh flexibility, not just price.
Step 1: Estimate the Fair Price With the CMS Charge-to-Cost Ratio
Hospitals report total charges and total costs to CMS. The ratio of cost to charges tells you roughly how much of each billed dollar corresponds to what the hospital spends to deliver care.
Formula: Billed amount × your hospital's cost-to-charge ratio = estimated cost of care
In my example I'll assume a ratio of 0.294, meaning the hospital's costs run about 29.4 cents per billed dollar. Your hospital's ratio comes from its own CMS cost report and could be higher or lower.
- $13,400 × 0.294 = $3,940 estimated cost
That $3,940 is not a price the hospital has to accept. It's an anchor. For the full method, including where to find the ratio, see our walkthrough on how to calculate the fair price on a hospital bill with the CMS formula.
Step 2: Set a Negotiation Target
I use three numbers:
| Number | Formula | Example |
|---|---|---|
| Opening offer | Estimated cost | $3,940 |
| Target settlement | Estimated cost × 1.25 | $4,925 |
| Walk-away ceiling | Estimated cost × 1.50 | $5,910 |
The 1.25 and 1.50 multipliers are my working assumptions, not industry rules. A hospital with a tough billing department may hold firm. Another might accept the opening offer. Change the multipliers to match how the conversation goes.
Here is what the target is worth on the example bill:
- Full balance: $13,400
- Target settlement: $4,925
- Difference: $8,475
Nothing else in this post comes close to that number. The interest-rate spread between a personal loan and a medical credit card, which I calculate below, is worth about $860 over 24 months. The tax deduction is worth $0 to a few hundred dollars. Negotiate before you finance anything. It also makes every later option cheaper, since you borrow less.
This is the kind of analysis Veloranix runs for you, so you don't have to build the spreadsheet yourself.
Step 3: Screen for Charity Care Before You Pay a Dime
Nonprofit hospitals are required to maintain a financial assistance policy, and thresholds vary widely by hospital. Many tie eligibility to a multiple of the federal poverty level.
Screening formula: Household income ÷ federal poverty level for your household size = your FPL multiple. Compare it with the cutoffs in your hospital's published policy. Many policies give a full write-off at the lower multiples and a sliding discount above that.
Two things to check:
- Which income counts. Some policies look at gross household income, and others allow adjustments. Read the definition.
- Whether the policy applies to you at all. For-profit hospitals aren't bound by the same requirement, though many have their own programs.
NerdWallet's "Quiz: What's the Best Way to Make Money?" is aimed at people looking for a side hustle. If you're considering one to cover a medical bill, know that extra income can push you out of charity care eligibility. A $6,000-a-year side hustle changes your income for a policy screen far more than it changes your tax deduction (Step 6). Screen first, then decide on extra income.
Step 4: Compare the Four Payment Options on the Negotiated Balance
Assume you settle at $4,925. Here are the four options, with the assumptions labeled:
- Hospital 0% plan: flat balance, no interest, as long as you make every payment on time.
- Medical credit card: I assume a 26.99% APR and treat it as a standard amortizing loan for comparison. Many of these cards use deferred interest, which I cover below.
- Personal loan: I assume a 12% APR with no origination fee. A 3% fee would add about $148.
- HSA: pays the balance from tax-advantaged dollars.
Total cost over three horizons
| Option | 12 months | 24 months | 36 months |
|---|---|---|---|
| Hospital 0% plan (if offered that long) | $4,925 | $4,925 | $4,925 |
| Personal loan at 12% | $5,251 ($438/mo) | $5,564 ($232/mo) | $5,889 ($164/mo) |
| Medical credit card at 26.99% | $5,674 ($473/mo) | $6,427 ($268/mo) | $7,238 ($201/mo) |
Interest cost above the $4,925 balance at 24 months: $0 for the hospital plan, $639 for the loan, and about $1,502 for the card. Stretching to 36 months takes the card to about $2,313 of interest.
The 0% plan wins on cost, but only when you can get one for the length of time you need. Many hospital plans run shorter than 24 months. Ask for the maximum term in writing.
The deferred-interest trap
If the medical card offers something like "no interest for 6 months," check whether it's deferred interest. If you don't pay off the full balance by the end of the promo window, interest can be charged retroactively on the original balance. On $4,925 at 26.99%, six months of back interest is roughly $660, and you'd still owe the ongoing rate afterward. Miss the payoff by one dollar and that $660 lands. Our break-even comparison of the 0% plan, personal loan, and medical credit card walks through the crossover points.
The HSA row
HSA dollars aren't a loan, so there's no interest. The question is whether paying $4,925 from the account is the best use of that money.
- If the money is already in the account, it was already sheltered when you contributed it. Paying the bill from it costs you $4,925 of tax-advantaged money.
- If you can still contribute this year through payroll, $4,925 at a 22% federal bracket costs about $3,842 after tax. That's the same $4,925 of bill for less take-home pay, because the tax savings offset part of it. Check your own bracket.
The trade-off is that HSA balances can otherwise be invested for future medical costs, so spending them now has an opportunity cost.
Two credit-related side notes
NerdWallet's cruise piece, "How I Earned 1 Million Points With My Family Cruise Booking," is a reminder of how much value people chase from cards. Say a rewards card earns 2% back (my assumption). On $4,925 that's $98.50. If you carry the balance at 24% APR, one month of interest is 2% of $4,925, which is also $98.50. One month of carrying the balance wipes out the rewards. Paying a settled bill in full on a rewards card can make sense. Financing it on one almost never does. Confirm the provider takes cards without a surcharge.
NerdWallet's "Locked Out: Should You Take 'Free Money' to Buy a Home?" is about homebuying assistance, but the lesson applies here: "free" comes with terms, so read them. If you plan to apply for a mortgage soon, a personal loan payment of about $232 a month counts as debt in a lender's eyes. Ask whether any hospital plan is reported to credit bureaus. Those are questions to answer before you sign, not after.
Step 5: Pick Based on Cash Flow Stress, Not Just Total Cost
The cheapest option on paper isn't always the safest one. A quick stress test:
- Take the monthly payment ($205 for the 0% plan over 24 months, $4,925 ÷ 24).
- Ask what happens if your hours get cut for two months.
- Ask who you can call. Hospital billing departments can often pause or restructure a plan. A loan payment can't usually be renegotiated.
With unemployment at 4.1% and a dime-an-hour wage gain against 0.4% monthly inflation (BLS), that flexibility has real value. If two options are close on cost, I'd lean toward the one with more room to adjust. If they aren't close, the math should win.
Step 6: Model the 7.5% AGI Deduction, and Don't Overvalue It
Unreimbursed medical costs are deductible only to the extent they exceed 7.5% of your adjusted gross income, and only if you itemize.
Formula: Deductible amount = total unreimbursed medical costs − (0.075 × AGI)
Example assumptions: AGI of $68,000, other unreimbursed medical costs of $1,800, a 12% marginal bracket, other itemized deductions of $9,000, and a standard deduction of $16,000 (check the current-year figure for your filing status).
- 7.5% floor: 0.075 × $68,000 = $5,100
| Scenario | Medical costs | Above the floor | Itemized total | Tax value |
|---|---|---|---|---|
| Negotiated ($4,925 + $1,800) | $6,725 | $1,625 | $10,625 | $0 (below the $16,000 standard deduction) |
| Not negotiated ($13,400 + $1,800) | $15,200 | $10,100 | $19,100 | about $372 ($3,100 above the standard deduction × 12%) |
Two lessons:
- The deduction can be worth $0. It only helps when total itemized deductions beat your standard deduction, and even then you only benefit from the excess.
- Never overpay to preserve a deduction. On this example, paying an extra $8,475 to gain a $372 tax benefit is a bad trade. A deduction returns cents on the dollar spent.
A side hustle changes the threshold slightly. An extra $6,000 of AGI raises the floor by 0.075 × $6,000 = $450, which at 12% costs about $54 of tax value. That's small next to the charity care implications in Step 3.
You can model this for your specific situation at Veloranix.
Step 7: Run the Medical Bankruptcy Sanity Check
Bankruptcy is a legal decision, so talk to a bankruptcy attorney if you're near it. There's no official line I can hand you. As a personal screening ratio, compare your debt after negotiation to your gross annual income:
- Negotiated: $4,925 ÷ $68,000 = 7.2%
- Unnegotiated: $13,400 ÷ $68,000 = 19.7%
My own rule of thumb, which is not a legal standard: if total unsecured debt approaches half of annual income with no realistic path to payoff within about five years, it's time for that attorney conversation. Both example bills sit well below it. Yours might not. Include credit card balances and other unsecured debts in the numerator, not just the hospital bill.
Putting It Together
Here's the sequence on the $13,400 example, with the numbers where I'd expect them to land:
- Estimate the fair price: $3,940.
- Negotiate to a target: $4,925, saving $8,475.
- Screen for charity care first, since it can beat any negotiated number.
- Compare payment options on the smaller balance. The 0% plan costs $4,925, the loan about $5,564 over 24 months, the card about $6,427.
- Stress test the monthly payment against your budget.
- Check the tax deduction, which may be worth $0.
- Run the bankruptcy sanity check.
If you want a structured way to decide between negotiating, charity care, and a plan, our 6-question checklist before signing a hospital payment plan is a good companion.
But your numbers will differ based on your specific situation. Your hospital's cost-to-charge ratio, your AGI, your bracket, your household size, your credit profile, and the plan terms you can actually get all change the answer. A different ratio moves the fair price. A different AGI moves the deduction. A different credit score moves the loan rate.
Run Your Own Numbers
With prices rising 0.4% in a month and only a dime an hour of pay growth, there's little slack to absorb a mistake on a five-figure bill. The good news is that the steps are the same for any bill, and the biggest lever, negotiating before you finance, comes first.
If you'd rather not build this by hand, Veloranix lets you enter your bill, your income, and your options and see the fair price estimate, negotiation target, payment plan comparison, and tax modeling side by side. Then you can decide with your own numbers in front of you.
Sources
- Major Economic Indicators Latest Numbers — Bureau of Labor Statistics
- How I Earned 1 Million Points With My Family Cruise Booking — NerdWallet
- Locked Out: Should You Take ‘Free Money’ to Buy a Home? — NerdWallet
- Quiz: What’s the Best Way to Make Money? — NerdWallet
- Mortgage Rates Today, Friday, September 18: No Change — NerdWallet