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That "0% APR" solar loan is not what it seems. Dealer fees silently inflate your loan balance by thousands of dollars. This calculator exposes the true cost so you can make an informed decision.
Average Dealer Fee
15 - 25%
of system cash price
Hidden Cost
$4,000 - $8,000
added to your loan
Impact on Total Cost
40%+
higher total paid
Enter the numbers from your solar quote to see the hidden dealer fee and compare it to a transparent market-rate loan.
The dealer fee is hidden in your loan amount
Dealer Fee = Financed Amount - Cash Price Solar lenders charge installers 15-30% of the system cost. That cost gets passed to you as a higher loan balance, even when advertised as "0% APR."
Ask your installer: "What would I pay if I wrote a check today?"
Common rates: 0%, 0.99%, 1.49%, 2.99%, 3.99%
Enter your loan details to see results
Your results will update in real-time as you type
A solar dealer fee is a hidden financing cost that most homeowners never know about until they compare their cash price to their loan amount. When a solar company offers you a loan at an attractively low interest rate, such as 0.99% or 1.49% APR, the lender charges the solar company a fee for providing that below-market rate. This fee, typically 15-30% of the system cost, gets passed directly to you by inflating your loan balance.
Here is the formula: Dealer Fee = Financed Amount - Cash Price. If your solar system costs $26,000 in cash but your loan is for $32,500, the $6,500 difference is the dealer fee. You are financing that extra $6,500 over the entire loan term, paying interest on money that does not buy you a single additional watt of solar.
Dealer fees exist because solar lenders compete for business by offering headline-grabbing low rates. A 0% APR sounds compelling, but the math tells a different story. The lender needs to earn a return, so it charges the installer upfront. The installer has two choices: absorb the fee and reduce profit, or pass it along to the homeowner. Almost every installer passes it along.
The most misleading aspect is that dealer fees are not always disclosed clearly. Your loan agreement will show the total financed amount, but it rarely calls out the dealer fee line by line. The Truth in Lending Act requires disclosure of the APR and total amount financed, but the dealer fee is technically baked into the principal, not the interest. This makes it legal but difficult for consumers to spot without comparing the cash price to the loan amount.
The installer quotes you a system price. If asked, the cash price might be $26,000. But the financed price on the contract is $32,500.
The solar lender offers a low-APR loan product but charges the installer a 25% dealer fee. On a $26,000 system, that is $6,500 paid by the installer to the lender.
To recoup the $6,500, the installer increases your contract price to $32,500. Your loan is now $6,500 larger than the actual cost of your solar system.
You make monthly payments on $32,500 instead of $26,000. Even at 0.99% APR, you pay interest on that extra $6,500 for 20-25 years.
Over a 25-year term, the total amount you pay on a dealer-fee loan frequently exceeds what you would have paid with a standard 7% APR loan on just the cash price.
The simplest way to avoid dealer fees entirely. Ask for the cash price and pay upfront. You will get the lowest possible price with zero financing costs. Some installers offer an additional discount for cash purchases.
Borrow against your home equity at competitive rates with zero dealer fees. Current HELOC rates are often 6-8%. You finance only the cash price, and the interest may be tax-deductible.
Some solar lenders offer products without dealer fees at market interest rates. The APR will be higher (6-9%), but you finance only the actual system cost. Always compare total cost over the loan term, not just the monthly payment.
Work with a solar company that clearly discloses dealer fees and offers multiple financing options. Ask upfront: "What is the cash price vs. the financed price?" If they cannot give a straight answer, look elsewhere.
The federal solar tax credit for homeowners (Section 25D) expired on December 31, 2025. This means residential cash and loan purchases get $0 in federal tax credits in 2026. Without that 30% cushion, every dollar of your solar investment matters more than ever.
When the tax credit existed, dealer fees were somewhat masked. If you overpaid by $6,500, the 30% credit would have returned $1,950 of that cost. Now, that $6,500 dealer fee is a pure, unmitigated loss. You pay every penny of it plus interest over 25 years.
This makes price transparency critical. In 2026, the difference between a $26,000 cash deal and a $32,500 financed deal with a dealer fee could mean $10,000 or more in additional costs over the life of the loan. That is money that could go toward battery storage, a heat pump, or simply back into your savings.
The solar industry is adjusting to the post-ITC landscape, and financing terms are shifting. Some lenders are increasing dealer fees to maintain their margins. As a homeowner, the single most valuable question you can ask is: "What is the difference between the cash price and the financed price?" That one question saves you thousands.
NuWatt Energy believes you deserve to know exactly what you are paying for. No hidden dealer fees. No inflated loan balances. Just honest pricing.