The Quick Read: Extra down payment shrinks the loan, and a smaller loan lowers the monthly principal-and-interest line in a steady, predictable way. It can also move you into a lower leverage tier and take mortgage insurance off the table. For someone paid in restricted stock units, the bigger question is often whether the stock counts as income at all and whether the shares you sell to fund the down payment have actually vested.
Here is how it works, start to finish.
Jumbo payment estimate
The starting figures are an example price in the jumbo range with ten percent down on a thirty-year fixed. Replace them with yours.
Editable benchmark: 7.40% as of October 15, 2026 · Freddie Mac 30-year average via FRED®. A conventional market reference, not a jumbo loan quote.
Illustrative starting assumptions: a $1,000,000 price in the jumbo range, ten percent down on the top-leverage lane, a thirty-year fixed structure at the current Freddie Mac conforming benchmark, and property taxes and insurance estimated at typical national rates. Every field is editable.
Illustrative estimate only — not a Loan Estimate, approval, quote, or commitment to lend. The rate field carries the weekly Freddie Mac thirty-year conforming benchmark, a market reference and not a jumbo loan quote; jumbo rates are set by the lender and the lane at lock and differ from the conforming benchmark. An adjustable-rate scenario is shown at the benchmark for the whole term; the rate after the initial period is unknown. Reserve months and appraisal counts follow the lane sheet for the amount band; the automated finding may require more. Taxes, insurance and dues are editable estimates; closing costs are not included. On most lanes the conforming limit for the county decides whether a loan is jumbo at all; two lanes start at a stated dollar floor instead. Licensed in sixteen states for consumer mortgages.
What Makes a Loan “Jumbo”?
A loan is jumbo when it is bigger than the conforming limit for your county. The Federal Housing Finance Agency sets that limit each year for loans Fannie Mae and Freddie Mac can buy, as Orrick’s InfoBytes summary of the FHFA announcement explains. Limits vary by county and by unit count, so check the current county table before you plan around any number. A jumbo loan begins one dollar above your county’s conforming limit.
Lendmire’s jumbo loan programs come in fixed, adjustable, and interest-only structures. The headline lane takes a 660 decision score, allows leverage up to 90%, and lends up to $5,000,000 on the largest lanes. Several lanes reach 89.99% combined loan-to-value (CLTV). The rest stop at 80%. Every figure here is subject to lender guidelines and full file review, and none of it is a commitment to lend.
What Does Extra Down Actually Do?
Extra down does three things. It cuts the loan balance, it lowers your loan-to-value ratio (LTV), and it uses up cash you might need elsewhere.
LTV is the loan amount divided by the home’s value. The Consumer Financial Protection Bureau notes that lenders use it to decide whether to lend, how much, at what price, and whether mortgage insurance is required. A larger down payment lowers LTV.
Think of it as a chain:
1. Smaller balance. Principal-and-interest drops in proportion to the loan. Cut the loan by a tenth, and that line drops by roughly a tenth. The relationship is nearly linear.
2. Lower leverage tier. Wholesale lanes price and qualify by LTV band. Crossing from the top band into a lower one can change terms and eligibility.
3. Less liquidity. Every dollar in the house is a dollar not sitting in reserves, an emergency fund, or the tax bill from your next vest.
Insurance, taxes, and any HOA dues don’t shrink when you put more down. Only the loan-driven part of the payment moves. That is why the payment falls less than you might hope.
How Does the Payment Respond, Step by Step?
Picture one buyer and one purchase price, with the down payment stepped up in layers. No dollar figures here. Percentages and direction are what matter.
| Down payment | LTV | Loan size | Principal and interest | Likely effect |
|---|---|---|---|---|
| Lowest tier | Top band | Largest | Highest | Tightest ratio, smallest reserves cushion |
| Mid tier | Lower band | Smaller | Noticeably lower | Better ratio, more room |
| Higher tier | Lower still | Smallest | Lowest | Strong ratio, but cash drawn down |
Each added layer of down payment trims the loan by the same percentage of price. The payment drops by the same proportion of the loan-driven line. The first extra layer usually does the most work, because it often crosses a leverage band. Later layers keep lowering the payment but stop changing your tier. That is the point of diminishing returns.
The second effect is on your debt-to-income ratio (DTI), which compares monthly debts to monthly income. The fixed lanes allow a 50% ratio ceiling. The adjustable lanes stop at 45%, and the interest-only lanes at 43%. A smaller loan means a smaller payment in the numerator. If your RSU income only partly counts, extra down can be the difference between clearing the ceiling and missing it.
Does the Lender Count Your RSU Income?
Sometimes. This is where tech borrowers get surprised.
The agency rule is a useful reference point. Fannie Mae’s guidance on RSU income says the stock must have vested and been distributed to you without restrictions. The lender documents that the stock is publicly traded, the vesting schedule (past and future), prior distributions on a brokerage or bank statement, and your income through a verification of employment or recent paystub. Two years of W-2s are part of the file.
Mortgage-insurer training aids add practical thresholds. Time-based RSUs generally need about a year of history, and performance-based grants need longer. Little vesting runway left can also disqualify the income. Fannie Mae and Freddie Mac can even reach different monthly figures from the same facts.
Jumbo loans are not agency loans, so each wholesale lender sets its own overlays. Some are stricter than the agencies. Some are more flexible. What I see across files is that the documentation is the same either way. Bring the vesting schedule, the statements, and the paystubs before the lender asks.
Some RSU income won’t count at all. A private-company employer fails the publicly-traded test. A short history of receiving the stock fails the track-record test. Sign-on grants that vest over time are often excluded as well. In those cases you qualify on base salary and bonus, and the size of your down payment does more of the heavy lifting.
Can Vested Shares Fund the Down Payment?
Yes, if they have vested. Fannie Mae’s selling FAQs accept vested stock as a source of funds when the value is documented with a recent brokerage statement, net of any margin. Unvested restricted stock is not an acceptable source. Only the vested portion counts.
Three practical points:
- Paper trail. Statements show where the money came from. If you sell shares, the sale proceeds and the transfer should be traceable from brokerage to your account to closing.
- Price risk. Value comes from a recent statement. If the stock drops between application and closing, your available funds drop with it.
- Taxes. Selling shares can create a tax event. Tax treatment can depend on your situation; borrowers should speak with a qualified tax professional before relying on any deduction or credit. The IRS is the place to start for how vesting and stock sales are taxed.
Vested stock can also sometimes count toward reserves without being sold, at its verified value. That matters. Reserves on these programs are measured in months of the full payment and rise with the loan amount. You may be able to keep the shares and still meet the reserve test, which leaves your down payment cash free for the house.
When Does More Down Stop Helping?
More down stops helping when it no longer changes a threshold. Past that point you are trading liquidity for a modest payment reduction.
Here is how I weigh it, and honestly it is a judgment call. If the next layer of down payment moves you across an LTV band, off mortgage insurance, or under a ratio ceiling, it earns its keep. If it just trims the payment on a loan that already qualifies cleanly, the case weakens, especially when the cash comes from shares you’d owe tax on and that might otherwise cover your next vest’s withholding gap.
Watch these edges:
- The appraisal. On a purchase, the lender generally uses the lower of the appraised value or the price. If the appraisal comes in short, you bring more cash to hold the same LTV. Keep a cushion for that.
- The two-appraisal threshold. Several lanes require two appraisals above a set loan amount. A larger down payment can shrink the loan below that line.
- Mortgage insurance. Conventional lenders often require private mortgage insurance (PMI) when LTV is above 80%. Many jumbo programs handle it differently, so ask how the specific lane treats it. Where PMI does apply, it can generally be removed once you build about 20% equity. Under the Homeowners Protection Act, you can request cancellation in writing when the balance reaches 80% of the original value, and it ends automatically at 78%. Lender-paid mortgage insurance works differently and is generally not cancellable.
- Concentration. If most of your net worth is employer stock, converting it to home equity trades one concentrated bet for another, with less ability to sell on short notice.
Occupancy matters here too. This piece assumes the home you live in. A second home or rental carries different leverage on these lanes, and that is a separate conversation.
A Decision Path for RSU Borrowers
Use this order. It keeps you from deciding the down payment before you know what income counts.
1. List your vested and unvested shares. Only vested shares can fund the down payment.
2. Ask which RSU income counts. Get the lender’s documentation list and vesting-history rules up front.
3. Run the file two ways. Once with RSU income counted, once on base and bonus alone.
4. Find your thresholds. Note the LTV band, ratio ceiling, appraisal threshold, and any mortgage insurance trigger.
5. Price the cost of cash. Include taxes on shares you’d sell and the reserves you’d leave behind.
6. Choose the smallest down payment that clears your thresholds with room to spare. Not the largest you can afford.
Key Terms Defined
Jumbo loan: A mortgage larger than the county’s conforming limit, so Fannie Mae and Freddie Mac cannot buy it.
LTV (loan-to-value): The loan amount divided by the home’s appraised value or purchase price.
CLTV (combined loan-to-value): LTV counting all loans secured by the home.
RSU (restricted stock unit): A grant of company stock that you receive as it vests over time.
Vesting: The point when shares become yours without restrictions.
DTI (debt-to-income): Your monthly debts divided by your monthly income.
Reserves: Liquid assets, counted in months of the full payment, that you keep after closing.
Frequently Asked Questions
Does a bigger down payment always lower the monthly payment on a jumbo loan?
Yes, the loan-driven part falls, because the balance is smaller. Taxes, insurance, and HOA dues stay the same, so the total payment drops by less than the principal-and-interest line does.
Can unvested RSUs count toward my down payment?
No. Only vested, documented shares count as funds. Unvested grants may still help in a limited way as income, but only when the lender’s rules and vesting history allow it.
Will a lender use my RSU income to qualify me?
Often, but not always. The stock usually must be publicly traded and vested, with a documented history, and each jumbo lender applies its own overlays. If it does not count, you qualify on base pay and bonus.
Should I sell shares to put more down?
It depends on whether the extra cash crosses a threshold. Selling may trigger taxes, so talk with a tax professional first, and weigh what you’d lose in reserves and flexibility.
Is mortgage insurance required on a jumbo loan?
It depends on the lane. Conventional loans often require it above 80% LTV, while many jumbo programs treat it differently. Ask how the specific program handles it before you pick a down payment.
If you are buying a home and want to see whether a jumbo loan fits your file, Lendmire can help you compare the options and what each one asks of the file.
For your own numbers, request a scenario review with Lendmire.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage broker licensed for consumer lending in 16 states. Lendmire arranges FHA, VA, conventional and jumbo purchase and refinance loans through wholesale lenders; every file is underwritten by the lender under the applicable program guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. Orrick InfoBytes – FHFA announces increases to conforming loan limits
2. Consumer Financial Protection Bureau – What is a loan-to-value ratio?
3. Fannie Mae – Selling Guide update on RSU income
4. Fannie Mae – Top trending selling FAQs
5. IRS
6. Fannie Mae – What to know about PMI
7. CFPB Examination Manual – Homeowners Protection Act procedures
This article is part of Lendmire’s jumbo loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How Much Cash a Low Down Payment Jumbo Loan Takes With Reserves · How Jumbo Loan Down Payment Rules Work for a 2-4 Unit Property · How Much a Bigger Down Payment Changes the Jumbo Loan Payment and Program
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
- North Carolina Real Estate Broker · License# 343312 · Verify on NCREC
- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Compliance and disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage broker and is not a direct lender, depository institution, financial advisor, or tax professional. Content in this article is general market analysis and educational information — not financial, legal, or tax advice for any specific situation. Lendmire does not guarantee loan approval; every transaction is subject to underwriting by the funding lender. Mortgage pricing and loan program guidelines are subject to change at any time without notice and vary by borrower characteristics, property type, and state regulations. Lendmire complies with Equal Housing Opportunity. Licensure verification: NMLS Consumer Access.