The short answer
An FQHC dentist with $300,000 at 8.07% pays about $172,000 on RAP and gets about $294,000 forgiven tax-free under PSLF, far below any refinance. A private-practice associate earning $180,000 usually comes out ahead refinancing, about $400,000 total in a 10-year, 6.0% fixed APR example (not an offer) versus $540,000 to $835,000 on RAP.
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Three paths, one debt. Which one is cheapest depends almost entirely on two facts: where you work, and how your income compares with what you owe.
Here are three typical dentists, with the math run month by month. Round numbers, same loan: $300,000 at 8.07% fixed, the 2026–27 federal graduate rate (FSA).
The three paths in one paragraph each
Refinance. A private lender pays off your federal loans at a new rate. It ends access to RAP, PSLF, federal forgiveness, and federal forbearance and deferment for those loans. You can’t reverse it.
RAP. Your payment is 1% to 10% of total AGI (10% above $100,000), divided by 12, minus $50 per dependent, minimum $10. Unpaid interest is waived each month, and if your payment cuts principal by less than $50, the government matches up to $50. Anything left after 30 years is forgiven and, from 2026, taxed as income.
PSLF. Make 120 qualifying payments, RAP payments included, while working full time for a government or 501(c)(3) employer. The rest is forgiven tax-free (Federal Student Aid).
Assumptions
- Single, no dependents, so RAP has no dependent credit.
- Income rises 3% a year unless noted.
- RAP payment uses that year’s income. Real RAP uses your last tax return, so it lags a year.
- Refinance example: 6.0% fixed APR, 10 years. Not an offer; see the rate table for current ranges.
- Forgiveness tax shown at 24% to 35% combined. Yours depends on your bracket and state.
- Totals are in raw dollars. The refinance vs forgiveness tool compares in today’s dollars, with 3% raises and a 35% forgiveness tax by default, so its figures differ from the flat-income cases here.
Scenario A: FQHC dentist pursuing PSLF
You work full time at a nonprofit FQHC for $150,000.
- RAP payment: 10% of $150,000 divided by 12 is $1,250 a month. It grows to about $1,630 by year 10.
- Interest: about $2,020 a month, so RAP waives the difference. Your balance still falls about $50 a month.
- After 120 payments: you’ve paid about $172,000. About $294,000 is forgiven, tax-free.
| Path | Monthly payment | Total paid |
|---|---|---|
| RAP + PSLF | $1,250 rising to about $1,630 | about $172,000 |
| Refinance example, 6.0% fixed, 10 years | about $3,330 | about $400,000 |
PSLF wins by about $228,000. Refinancing here is the single most expensive mistake on this page.
One risk to track: a 2025 rule on which employers qualify was vacated. As of September 2026, it’s on appeal at the First Circuit. Most FQHCs are 501(c)(3)s, but confirm yours with the PSLF Help Tool each year.
Scenario B: private-practice associate at $180,000
No PSLF employer in sight. You earn $180,000.
- RAP payment: $180,000 × 10% ÷ 12 = $1,500 a month, below the $2,020 of interest at first.
- With 3% raises: your payment passes the interest after about 10 years and reaches about $3,500 by year 30. You pay the loan off just short of 30 years, about $835,000 in total. Nothing is left to forgive.
- With flat income: you pay about $540,000 over 30 years. About $282,000 is forgiven, which adds a tax bill of roughly $68,000 to $99,000. All-in: about $610,000 to $640,000.
- Paying the federal loan off in 10 years: about $3,650 a month, $438,000 total.
- Refinance example: $300,000 at 6.0% fixed APR over 10 years is about $3,330 a month and $400,000 in total. Not an offer; your rate depends on credit.
| Path | Monthly payment | Total paid |
|---|---|---|
| RAP, 3% raises | $1,500 rising to about $3,500 | about $835,000 |
| RAP, flat income, forgiveness at 30 years | $1,500 | about $540,000 + $68,000–$99,000 tax |
| Federal, 10-year payoff at 8.07% | about $3,650 | about $438,000 |
| Refinance example, 6.0% fixed APR, 10 years | about $3,330 | about $400,000 |
Refinancing saves about $38,000 against a 10-year federal payoff, and much more against RAP. For most associates in this spot, refinancing is the cheaper path, as long as you keep an emergency fund to replace federal forbearance.
Scenario C: resident, then associate
You do a two-year residency on a $65,000 stipend, then join a private practice at $180,000.
Path 1: RAP in residency, refinance after. Your first RAP year uses your D4 tax return, near $0. So the payment is $10 a month. Year two is 6% of $65,000 ÷ 12, about $325 a month.
Interest is about $2,020 a month, and RAP waives nearly all of it. After 24 months you’ve paid about $4,000 and owe about $299,000. Refinance then. Example: about $299,000 at 6.0% fixed APR over 10 years is about $3,320 a month and $399,000 in total. Not an offer.
Path 2: resident refinance loan now. Example: $300,000 at 6.0% fixed APR, $100 a month for 24 months, then 10 years of full payments. Not an offer. Unpaid interest of about $33,600 is added to principal when residency ends, the way SoFi describes its resident loan (not every lender capitalizes). You then owe about $333,600: about $3,700 a month and $444,000 over 10 years.
| Path | Paid in residency | Balance after residency | Total paid |
|---|---|---|---|
| RAP, then refinance at 6.0% fixed | about $4,000 | about $299,000 | about $403,000 |
| Resident refinance at 6.0% fixed | about $2,400 | about $333,600 | about $447,000 |
Waiting saves about $44,000, even at the same rate. RAP’s interest waiver does the work. Path 1 assumes you start RAP payments when residency starts; interest during the six-month grace period isn’t waived, and would add about $12,000 at 8.07%. More on this in Refinancing during residency.
If your post-residency job is at an FQHC, the VA or a university, you’d skip refinancing entirely and follow Scenario A.
What actually decides it
- Employer. A qualifying PSLF job beats refinancing in almost every case.
- Balance vs income. When income is well above balance, you’ll repay most of the loan on RAP anyway, so a lower rate wins. When balance is several times income, RAP forgiveness can win even after the tax. See When refinancing is a mistake.
- Timing. Low-income years (residency, the first months of ownership) favor RAP. Stable high-income years favor refinancing.
- Your need for a safety net. Refinancing ends federal forbearance, deferment and, per the CFPB, may end death and disability discharge.
What to do next
- Put your own numbers in the refinance vs forgiveness tool. Use your real AGI, dependents and balance.
- Check PSLF before anything else if you might work for a nonprofit or government: PSLF for dentists.
- Learn RAP’s rules on RAP for dentists, and the tax side on whether forgiveness is taxable.
- If refinancing wins, compare lenders with soft pulls: best refinance lenders for dentists.
- If it’s close, a one-time custom plan (below) costs less than guessing wrong on $300,000.
Written by Ryan Smith, DDS (draft awaiting his approval). Review by a certified student loan professional is pending. This page is general education, not financial, tax or legal advice for your situation. Found a mistake? Tell us.