≈ $0 down
Estimated total
$376/mo
Your estimate factors in your household income, any existing monthly debt, and credit score, then combines that with the solar system's price, down payment, interest rate, and loan term you enter to work out a monthly payment - weighed against your income to gauge how risky the purchase would be.
These key factors affect solar panel affordability
Income and expenses
A solar payment doesn't exist in a vacuum - it's one more line competing with your mortgage, car payment, and everything else already coming out of your paycheck. That's why we weigh it against your income alongside any other debt you've logged instead of judging the number by itself.
Financing vs. cash vs. lease
There are three real ways to go solar: buy the system outright, finance it with a loan, or lease it through a power purchase agreement where you're really paying for the electricity, not the hardware. A lease often has the lowest upfront cost, sometimes no down payment at all, but you typically never build equity in the panels, and that can complicate things if you sell the house before the lease term is up. A cash purchase or loan costs more upfront, but the system - and whatever equity or resale value it adds - is actually yours.
Tax credits and incentives
This used to be simple: a 30% federal tax credit that applied to almost any residential system. That federal credit ended for residential solar placed in service after December 31, 2025, so if you're pricing a system now, don't build a federal discount into your math. State, local, and utility incentives are a different story - some areas still offer meaningful rebates - but they vary enormously by location, so check what's actually available where you live rather than assuming a set percentage off.
Payback period
The monthly loan payment is only half the picture. What actually determines whether solar was worth it is the payback period - how many years of electricity savings it takes to offset what you paid - and that number swings a lot based on your local utility rates and how much usable sun your roof actually gets, not just the system's sticker price.
System size and roof suitability
Bigger isn't automatically better. A system sized to your actual usage, on a roof with good sun exposure, will outperform an oversized system stuck on a shaded or poorly angled one - worth getting a real site assessment before you commit to a price, not just a satellite-based estimate.
How to use your results
Try adjusting the inputs to see what actually moves your risk score:
- Down payment - see how putting more down lowers your monthly payment and risk score.
- Loan term - compare a shorter term's higher payment against a longer term's lower one.
- Interest rate - rates vary between solar-specific lenders, home equity loans, and general personal loans.
- Existing debt - add what you're already carrying for a more realistic picture.
Ways to increase how much solar you can afford
- Look into state, local, or utility incentives - the federal tax credit no longer applies to new residential systems, but some local programs still meaningfully lower the cost.
- Compare loan, cash purchase, and lease options, since each shifts the cost and ownership differently.
- Shop multiple installers - quotes for a comparable system can vary a lot.
- Right-size the system to your actual electricity usage rather than the largest one a roof can fit.
- Pay down existing debt to improve your terms before applying for solar financing.
More home improvement calculators
Sources
Bureau of Labor Statistics (median income by age, shown in the sidebar), Experian (credit score by age, shown in the sidebar) - starting points to compare against, not real-time quotes.
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