Financing, ownership and contracts
Will a solar loan block your refinance? The lien, the ratio and the payoff rule
A solar loan usually does not stop a refinance, but it changes what the mortgage lender has to do. Under Fannie Mae's Selling Guide, the solar loan's payment goes into your debt-to-income ratio, and if a UCC fixture filing sits in the county land records, it also counts toward the combined loan-to-value ratio and must be subordinated when it ranks ahead of the new mortgage. The guide also lets a limited cash-out refinance pay a solar loan off in full, and its HomeStyle Refresh product caps that payoff at 15 percent of the appraised value.
The payoff rule is the part most homeowners do not know. Fannie Mae makes an exception to its rule against paying off non-purchase subordinate debt in a limited cash-out refinance for debt, secured or unsecured, used solely for energy-related improvements. The details change what a closing looks like, so the sections below work through the three places a solar loan touches the file and then prices each with stated inputs.
The loan alternatives themselves are compared in the cash against loan guide, and a leased system, which behaves differently, is covered in the leased-solar sale guide. The rules quoted are Fannie Mae's, from the Selling Guide pages dated October 8, 2025 and August 5, 2026. Other investors, FHA and VA set their own, and a lender's overlays can be stricter.
Three places a solar loan shows up in a mortgage file
A mortgage lender learns about solar debt from three documents. The credit report shows a loan whether or not it is secured, and Fannie Mae's guide tells lenders to evaluate the credit report for solar-related debt and to ask the borrower for the related paperwork. The title report shows whether a financing statement is recorded in the land records. And the borrower's own papers, the note and the security agreement, say what the panels are collateral for.
Those three sources sort a solar loan into one of the cases in the table. The cases matter because the same $23,600 loan can be a debt-to-income problem only, or a debt-to-income and a lien problem, depending on where the lender's filing was made.
Documentation gaps carry a price. Fannie Mae's guide says that if the documentation is insufficient and the ownership of the panels is unclear, no value for the panels may be attributed to the property value on the appraisal unless the lender obtains a UCC personal-property search confirming that no non-mortgage lender claims the panels as collateral. In practice that means a homeowner who cannot say who financed the system may find the panels worth nothing in the appraisal until a search proves otherwise, so keep the loan agreement and the final payoff letter with the house papers.
| What the file shows | Loan payment in DTI | Panels' value in the appraisal | Debt in the combined LTV | What else the lender must do |
|---|---|---|---|---|
| Fixture filing recorded in the land records | Yes | Counted, if the panels cannot be repossessed on default | Yes, because the filing is of record | Subordinate the filing if it ranks ahead of the mortgage |
| Panels collateral for the loan, but nothing on the title report | Yes | Not counted, because they are collateral for another debt | No; the panels are treated as personal property | Review the credit report, note and any financing statement |
| Panels owned: paid in cash, financed and repaid, included in the purchase price, or secured by the first mortgage | Not applicable | Standard rules | Standard rules | Standard appraisal, insurance and title requirements |
| Leased or power purchase agreement | Payment counts unless it is a fixed delivery with a production guarantee | Not counted | No | Collect the lease and check the damage, insurance and foreclosure clauses |
| PACE assessment | Not applicable | Not applicable | Not applicable | Property ineligible unless paid in full at or before closing; see the PACE guide |
The second row deserves a second look. It describes a loan that is secured by the panels but whose financing statement does not describe the real estate. The panels are then personal property and are kept out of the combined loan-to-value ratio, but the loan's payment is still a debt, and the appraiser is told not to credit the panels' value. A lender that takes a filing against the home and the panels together is in the first row, and the effect on the numbers is different.
What a UCC filing is and why it can rank ahead of a mortgage
A solar lender protects itself with a financing statement under Article 9 of the Uniform Commercial Code. A fixture filing is a UCC-1 made for goods that are or will be attached to real estate, and Fannie Mae's definition adds that it contains a description of the collateral and of the real estate, and is filed in the office where mortgages are recorded. Its purpose is notice: it tells a title company and any later lender that someone has a security interest in the panels.
The model text of section 9-334 explains why such a filing can rank ahead of a mortgage. A perfected purchase-money security interest in fixtures has priority over a conflicting earlier interest of an encumbrancer or owner of the real property if the debtor is the owner of record or in possession, and the fixture filing is made before the goods become fixtures or within 20 days afterward. Fannie Mae states the same result in its guide: a properly filed fixture filing has priority over a subsequently recorded mortgage. A solar loan filed on installation can therefore sit ahead of a refinance mortgage that is recorded later, which is why the guide requires subordination when a filing is senior.
States adopt the code with variations, and Fannie Mae's note adds that a UCC filing covering personal property, not intended as a fixture filing, goes in the filing office the state's version of the UCC names. Treat the model text as the pattern and the state statute as the rule.
How long a filing lasts and when it must come off
A financing statement is effective for five years from filing and lapses unless a continuation is filed within the window the code allows, so a loan that runs 20 years normally needs continuations. Termination runs the other way. Under section 9-513, for a filing covering consumer goods, the secured party must file a termination within one month after nothing is owed, or within 20 days after the debtor's authenticated demand if that comes first. For other collateral, the secured party must send or file a termination within 20 days after an authenticated demand. Whether panels bolted to a house are consumer goods or fixtures is a question the statute leaves to the facts, which is why a written demand is the safer move once the loan is paid.
The debt-to-income arithmetic, with the numbers in the open
Every row in the table above except the owned case puts the solar payment into the debt-to-income ratio. The size of the effect depends on the payment, and the payment depends on the loan structure, so the two examples here are chosen to show both ends. The household has a gross income of $9,000 a month and obligations of $3,300 a month before solar, which is a ratio of 36.7 percent. All loans are illustrations at stated rates, with the cash price at the $23,600 benchmark line for an 8 kW system ($2.95 per watt DC, the U.S. Department of Energy's Q1 2025 residential benchmark in 2024 dollars, checked October 30, 2026).
| Loan structure | Amount financed | Monthly payment | Ratio after solar | Increase |
|---|---|---|---|---|
| 8.00 percent, 20 years | $23,600 | $197.40 | 38.9% | 2.2 points |
| 8.00 percent, 12 years | $23,600 | $255.46 | 39.5% | 2.8 points |
| 6.50 percent, 10 years | $23,600 | $267.97 | 39.6% | 3.0 points |
| 2.99 percent, 25 years, 25 percent fee inside the loan | $31,467 | $149.05 | 38.3% | 1.7 points |
The last row is the lesson of the dealer-fee guide in miniature: the lowest payment belongs to the loan that cost the most, which is why a payment-based comparison during a refinance application can reward the worse loan. The cost-of-credit math for that row is in the dealer-fee guide. For refinance purposes the point is narrower. A payment of $149 to $268 moves the ratio by about two to three points here, which clears most limits but not a tight one, so a borrower near a threshold is the one who should price the payoff route below.
The combined loan-to-value effect applies only to a recorded filing
A filing in the land records brings the solar debt into the combined loan-to-value ratio, which adds secured balances against the appraised value. Three illustrative homes show the size. The figures assume the first mortgage balance shown and the same $23,600 solar debt, or $31,467 if the fee sits inside the loan.
| Appraised value | First mortgage | LTV before | Combined, $23,600 solar debt | Combined, $31,467 solar debt |
|---|---|---|---|---|
| $600,000 | $420,000 | 70.0% | 73.9% | 75.2% |
| $500,000 | $350,000 | 70.0% | 74.7% | 76.3% |
| $400,000 | $300,000 | 75.0% | 80.9% | 82.9% |
On the lowest-value home a solar loan lifts the combined ratio by 5.9 points, and the first row moves 3.9. These differences matter for any threshold the lender prices around, and they are why the title search and the recorded filing matter more than the loan balance alone. A panel loan secured only by a personal-property filing, in the second row of the first table, does not enter this calculation at all.
The payoff route: what a limited cash-out refinance allows
Fannie Mae's limited cash-out refinance normally may not pay off a subordinate lien unless it was used to purchase the property. The guide then carves out an exception: paying off a PACE loan or other debt, secured or unsecured, that was used solely for energy-related improvements. The acceptable-uses list repeats it, and the ineligible-transactions list excludes the same debt from the prohibition. Cash back to the borrower is still capped at the greater of 1 percent of the new loan or $2,000.
HomeStyle Refresh, the product the exception points to, sets the limit: payoff of non-PACE energy-improvement debt in a limited cash-out refinance can total up to 15 percent of the appraised value, the debt must be paid off in full, and partial payoffs are not permitted. If a loan includes both new energy-related improvements and a payoff, the two together cannot exceed 15 percent. On a $500,000 home the cap is $75,000, and on a $400,000 home it is $60,000, so a $23,600 solar loan fits either with room to spare.
To use it, the lender must document that all proceeds of the existing lien paid for permissible energy-related expenses, and the guide lists invoices or receipts as acceptable evidence, noting that an energy report is required in many cases. A borrower who still has the installation contract and the final invoice has most of that file already.
What the payoff changes
A PACE assessment follows a stricter path, described in the PACE guide. Folding a solar loan into a new first mortgage replaces a short, higher-rate loan with a long, lower-rate one, and that is where the arithmetic gets interesting. If the solar loan is at 8 percent and the new mortgage is at 6.5 percent, rolling $23,600 in saves interest each month but extends it over 30 years. Whether that saves money depends on how soon you would pay it off otherwise. The effective-rate method in the loan-or-cash guide gives the comparison, and the cost of the closing itself, which is not covered here, belongs in the answer. If the lender that holds the solar loan has closed, the payoff letter is harder to get, and the closed-company guide covers who services the loan next.
The rule is Fannie Mae's. A lender that sells to someone else, or one that applies its own stricter overlay, may refuse the payoff, so ask for it in writing before the application, not at the closing table.
When rolling the loan into a new mortgage actually saves money
The payoff rule makes a roll-in possible. Whether it is worth doing is a rate question, and the rate that matters is not the solar loan's but the blend. A refinance replaces the whole first mortgage, not only the solar balance, so the new rate has to beat the weighted average of everything it replaces. Freddie Mac's weekly survey put the average 30-year fixed rate at 7.32 percent on October 22, 2026, up from 6.19 percent a year earlier. At that level the arithmetic favors very few households.
The table assumes a first mortgage balance of $350,000, a solar loan with $20,000 left at 8 percent, and a new 30-year loan of $370,000 at 7.32 percent. The blended rate is the balance-weighted average of the two existing rates.
| Existing mortgage rate | Blended rate on mortgage plus solar | New mortgage rate | Rolling everything into the new loan |
|---|---|---|---|
| 3.50 percent | 3.74 percent | 7.32 percent | Raises the rate on $370,000 by 3.58 points |
| 5.00 percent | 5.16 percent | 7.32 percent | Raises the rate by 2.16 points |
| 6.50 percent | 6.58 percent | 7.32 percent | Raises the rate by 0.74 points |
| 7.32 percent | 7.36 percent | 7.32 percent | Roughly neutral on rate; closing costs decide |
| 8.00 percent | 8.00 percent | 7.32 percent | Lowers the rate by 0.68 points |
A household with a 3.5 percent mortgage would swap 3.74 percent money for 7.32 percent money to retire an 8 percent loan on $20,000, which costs far more than it saves. The solar loan is the smaller part of the picture, and the better route is usually to prepay it from savings or leave it alone, which the cash against loan guide prices. The roll-in earns its place when a refinance is already happening for another reason, such as a high-rate mortgage, a divorce buyout or a move to a different loan type, and the payoff rule then removes the solar debt at no extra step.
Two conditions also apply. The payoff has to be complete under HomeStyle Refresh, and the new loan has to clear the lender's other tests, including the ratios above. Keep the same stated rate in mind next time rates move: this table has to be redone with the day's survey number.
Getting a senior filing subordinated, step by step
If a fixture filing is of record and the borrower is not paying the loan off, the guide requires it to be subordinated to the new mortgage. The practical sequence has five steps.
- Order or ask for the title report early. The filing's presence, the filer's name and the recording date decide whether subordination is needed.
- Ask the mortgage lender, in writing, to name the document it needs and who prepares it, since the guide requires subordination but does not supply a form.
- Contact the solar loan servicer, which may not be the company that sold the system, and ask for its subordination procedure and any fee. Do this in writing and give the loan number, the recording information and the mortgage lender's closing date.
- Leave room in the closing date. The guide sets no deadline for the solar servicer, so the schedule depends on how quickly it responds.
- Get a copy of the recorded subordination or the lender's written acceptance for your own file, because it is the paper that explains the filing the next time a lender finds it.
None of these steps is a statutory deadline. The subordination timetable and any fee come from the solar lender's own procedure, which this guide did not read for any particular lender; ask for it before you apply.
If you sell the house instead of refinancing it
The same lien question comes up at a sale, with a different set of options. The CFPB's solar financing spotlight lists two usual ways to leave the panels with the house when a solar loan is outstanding: the buyer agrees to assume the loan if the lender permits it, or the seller pays the balance off before the sale. It describes moving panels to a new house as not typical, because of the risk of damaging the panels or the roof.
A buyer using a conventional loan sold to Fannie Mae brings the same table as above to the file, so a recorded filing the seller leaves behind is the buyer's lender's problem too. Paying the loan off at the closing and asking the secured party for a termination of the filing is the cleanest outcome, because it leaves nothing for the buyer's lender to subordinate. The CFPB report also quotes a trade analysis that a UCC lien is technically not on the property but can muddy the title because some jurisdictions view it as applying to the whole property, and then it must be released or made subordinate to the mortgage or refinance.
If the panels are leased, not financed, the sale runs on a different track, set out in the leased-solar guide. Ask for the payoff statement at least a few weeks before a listing. The seller needs the figure the loan's servicer will accept, and a loan that has re-amortized shows a balance that is higher than the one on the original schedule.
Whether the panels add anything to the sale price depends on how they are held, and the evidence on owned systems is read in the home value guide, with the Fannie Mae ownership cases side by side.
Choosing a solar loan with a refinance in mind
A homeowner who expects to refinance within a few years can read the contract for three things before signing. First, ask where the lender files and what the filing describes: a financing statement for the panels only, or a fixture filing in the land records. Second, ask for the payoff and termination procedure in writing, including whether the lender sends the termination after payoff or only on demand. Third, check the loan's re-amortization terms. The Consumer Financial Protection Bureau's 2024 issue spotlight found loans that assume a lump-sum prepayment, often 30 percent, around the 19th month, with payments recalculated if it does not arrive; a refinance that happens before that date can be a way to make the prepayment, and one that happens after the recalculation starts from a higher payment.
One more reading note applies to loans signed while the federal credit still existed. The CFPB found that solar-specific loans commonly re-amortize at a higher payment at the 19th month unless the borrower prepays a large share of principal, frequently 30 percent, matching the credit's size at the time, and that solar loans typically last 8 to 25 years on paper but are repaid in 7 to 9 years because of prepayments. The credit is gone for systems placed in service after 2025, so a lender may have changed its structure. Whatever the structure, read whether a payment step-up depends on a prepayment you will not make, because that is the payment a refinance lender will count.
Solar loan and refinance questions
Can I refinance my mortgage if I have a solar loan?
Usually yes. Under Fannie Mae's Selling Guide the solar loan's payment goes into the debt-to-income ratio, and a recorded fixture filing also goes into the combined loan-to-value ratio and must be subordinated if it ranks ahead of the new mortgage. A limited cash-out refinance can pay the solar loan off in full.
Do I have to pay off the solar loan to refinance?
Not under Fannie Mae's rules. A recorded filing has to be subordinated if you keep the loan, and paying it off through a limited cash-out refinance is an option rather than a requirement. A PACE assessment is the exception: the property is ineligible unless it is paid in full at or before closing.
Is a UCC filing on my solar panels a lien on my house?
A fixture filing recorded in the land records can rank ahead of a later mortgage, so it works like one for priority. A financing statement that describes only the panels, filed outside the land records, is treated as personal property and kept out of the combined loan-to-value ratio.
How much solar debt can a refinance pay off?
For non-PACE energy-improvement debt in a limited cash-out refinance under HomeStyle Refresh, up to 15 percent of the appraised value, paid in full. The guide page was dated August 5, 2026 when read. Partial payoffs are not permitted.
How do I get the UCC filing removed after paying off the loan?
Send a written demand to the secured party. Under the model UCC section 9-513 the secured party must file or send a termination within 20 days after an authenticated demand, and for consumer goods within one month after nothing is owed if that comes first. Your state's version controls.
Does the solar loan hurt my debt-to-income ratio when I buy a new house?
Yes. The guide treats the payment as a debt obligation in every financed case, with a lease or power purchase agreement the only one where the payment may be left out, and only under specified conditions. The ratio table above shows two to three points on a typical loan.
Sources and verification
- Fannie Mae Selling Guide B2-3-04, Special Property Eligibility Considerations (Properties with Solar Panels): Underwriting table by financing structure; UCC fixture filing definition; subordination requirement; PACE ineligibility unless paid in full at or before closing. Announcements listed through October 8, 2025. Checked October 23, 2026.
- Fannie Mae Selling Guide B2-1.3-02, Limited Cash-Out Refinance Transactions (10/08/2025): Exception to the subordinate-lien payoff rule for PACE and other debt, secured or unsecured, used solely for energy-related improvements; documentation; cash back limit of the greater of 1 percent or $2,000. Checked October 23, 2026.
- Fannie Mae Selling Guide B5-3.3-01, HomeStyle Refresh for Improvements on Existing Properties (08/05/2026): Payoff of non-PACE energy-improvement debt in a limited cash-out refinance up to 15 percent of appraised value, in full, no partial payoffs. Checked October 23, 2026.
- Uniform Commercial Code 9-334, 9-502, 9-513, 9-515 (Cornell LII, official text): Fixture priority, financing statement contents, termination timing, five-year effectiveness. Model text; state enactments vary. Checked October 23, 2026.
- CFPB, Issue Spotlight: Solar Financing (archived August 7, 2024): Loans that assume a prepayment around the 19th month and re-amortize if it does not arrive. Checked October 23, 2026.
- Freddie Mac, Primary Mortgage Market Survey: 30-year fixed 7.32 percent and 15-year fixed 6.68 percent for the week ending October 22, 2026; 30-year was 6.19 percent a year earlier. Checked October 23, 2026.
- U.S. Department of Energy, Solar Photovoltaic System Cost Benchmarks (Q1 2025): Table 2, residential 8 kW DC PV-only system: modeled market price $2.95 per watt DC (minimum sustainable price $2.78), in 2024 dollars, owner tax credits and subsidies excluded. The comparison line behind the cost figures in this guide. Checked October 30, 2026.
This guide describes Fannie Mae's rules only. FHA, VA and Freddie Mac rules were not verified (the Freddie Mac guide page returned an access error), and a lender may apply stricter overlays. Subordination procedures and fees come from each solar lender and were not read for any lender. State enactments of the UCC differ from the model text. Debt-to-income and loan-to-value figures are illustrations, not underwriting advice.