The Quick Read: The choice comes down to how long you will keep the loan, how much of your income is stock, and how much cash you hold in reserve. A fixed rate protects a budget that rides on uneven vesting. An adjustable rate can work if you have a firm exit date and a deep cushion. Lenders count only vested, documented RSU income, and an adjustable loan may be underwritten more tightly than a fixed one.
What Makes a Loan “Jumbo”?
A jumbo loan starts one dollar above your county’s conforming limit. Fannie Mae and Freddie Mac cannot buy it, so wholesale lenders set their own rules. The Federal Housing Finance Agency publishes limits by county, and the same loan can be conforming in one county and jumbo in the next.
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.
Many equity-paid buyers land here simply because of the price of the home. Lendmire’s jumbo loan programs are arranged through wholesale lenders. Across those programs, the headline lane starts at a 660 decision score. Leverage reaches 90%, and loans go up to $5,000,000 on the largest lanes. Every figure is subject to lender guidelines and full file review, and none of it is a commitment to lend.
Key Terms Defined
RSU (restricted stock unit): A grant of company shares that you receive on a vesting schedule.
Vested: The shares are yours to keep or sell, with no remaining conditions.
Initial period: The stretch at the start of an ARM when the rate stays put.
Index and margin: The index is a market benchmark. The margin is the extra amount the lender adds to it.
Rate cap: A limit on how far an ARM’s rate can move at one time or over the life of the loan.
Reserves: Liquid savings, counted in months of your full payment, that you hold after closing.
How Do Lenders Count RSU Income on a Jumbo?
Lenders count RSU income only when it is vested, documented, and likely to continue. Unvested shares generally do not count, because they can vanish if you leave or the grant changes.
Agency guidance sets the baseline. Fannie Mae accepts RSUs as income when the stock has vested and been distributed without restrictions, and it asks for W-2s covering the most recent two years. Jumbo lenders set their own overlays, so treatment varies by lender and program. Nothing here is a universal rule.
Expect to pull together:
- Recent W-2s and year-to-date pay stubs.
- The grant or award agreement.
- Your vesting schedule.
- Brokerage or equity-plan statements showing shares delivered.
Many jumbo lenders also want evidence of future vesting. That is the continuance test: will this income keep arriving?
Two other points shape the file. Time-based awards and performance-based awards are documented differently, and the history lenders want can differ between them. A new employer can also reset your history. Across the wholesale programs we place files with, a longer, steadier vesting record makes for a smoother file. A thin one usually pushes the conversation toward other strengths, like credit, reserves, and down payment.
Does Choosing an ARM Change How Your Income Is Qualified?
Yes, it can. Qualifying income and the payment you choose are two separate questions, and the loan structure affects the second.
On the wholesale jumbo lanes we work with, the fixed lanes allow a debt-to-income ratio of up to 50%. The adjustable lanes stop at 45%, and the interest-only lanes at 43%. So an ARM does not automatically stretch your buying power. The lower starting payment does not guarantee a bigger loan, because investors may test the loan at a different payment than the one you will make in year one.
The federal ability-to-repay rule works the same way for loans that follow its qualified-mortgage standard. Under Regulation Z, the lender must look at the maximum rate that may apply in the first five years. Shorter initial periods get tested at a higher rate than longer ones. Jumbo loans do not have to be qualified mortgages, so investors can set their own testing. Ask your loan officer how the specific loan you are considering gets qualified.
One more feature to flag. A qualified mortgage cannot defer principal or carry a balloon payment, per 12 CFR 1026.43. Some jumbo loans do offer interest-only terms, which is a good reason to compare products line by line.
Fixed vs. ARM: Side by Side
| Factor | Fixed | ARM |
|---|---|---|
| Payment | Stays the same | Can change after the initial period |
| Qualifying ratio ceiling | Up to 50% | Up to 45% |
| Best fit | Long hold, variable income | Defined exit, big cushion |
| Main risk | Costs more upfront in some cases | Payment shock at reset |
| RSU interaction | Budget stays steady | Reset may meet weaker income |
Per the CFPB, many ARMs start lower than fixed loans. Many is not all. After the introductory period, the rate changes at set intervals and the payment is likely to rise.
How to Read an ARM Label
A “7/6” loan holds its rate for seven years, then adjusts every six months. The first number is the initial period. The second is how often the rate changes after that.
The adjusted rate is the index plus the margin. Caps limit the movement. The CFPB explains that an initial adjustment cap limits the first change, a subsequent cap governs later ones, and a lifetime cap limits the total increase. Initial caps of two or five percentage points are common.
Caps do not mean you are protected from rising payments. They limit each step, not the direction. And unused increases can carry into later adjustments.
The Four-Question Decision Framework
Run your own file through these questions. This is a planning tool, not advice.
1. How long will you keep the loan? If you expect to sell or refinance well before the reset, the ARM’s initial period does the work. If you are unsure, assume you will still own the loan at reset.
2. How much of your income is RSUs? The heavier the stock share, the more your monthly cash flow depends on vesting dates and share prices. A mostly base-salary earner can absorb an adjustment more easily.
3. What do your reserves look like? Lenders measure reserves in months of the full payment, and the requirement rises with the loan amount. Count what the lender requires, then ask what you want on top of it.
4. What happens in the downside? This is the central judgment call. Your income and your stock are tied to one employer. A layoff, a smaller refresh grant, or a falling share price can arrive in the same season as a rate reset. Vested shares that serve as your cushion can shrink in that same downturn.
Three Hypothetical Profiles
These are modeled situations, not real files.
The base-heavy earner. Most income is salary, and RSUs are a bonus layer. Payment shock is manageable, so an ARM is reasonable if the hold period is short. Fixed still wins for a long stay.
The RSU-heavy earner. Half or more of qualifying income is stock. Income swings with the market, so a fixed rate lets the budget hold steady even in a weak vesting year. An ARM makes sense only with a hard exit date and substantial liquid reserves outside company stock.
The recent hire. A thin vesting history may mean RSUs do not count yet. Qualifying on salary alone shrinks the loan, and waiting for more history may help the file more than any rate structure.
Stress-Test Before You Choose
Try this exercise on paper. Take the lowest vesting year you can imagine and a payment at the loan’s maximum cap. Can the household carry it for twelve months without selling shares at a bad price? If yes, the ARM risk is one you can live with. If you hesitate, that hesitation is your answer.
Also test the exit. A refinance is its own approval with closing costs. It depends on your income, your credit, and your home’s value at that time. Do not treat it as a guaranteed way out of a reset.
When you compare offers, ask for the APR alongside the initial rate. The CFPB handbook notes that an APR well above the initial rate signals much higher payments after adjustment. Also ask for the index and margin, so you can compare structures directly.
Timing Your Application Around Vesting
Collect your documents early. Vesting schedules, W-2s, and brokerage statements take time to gather. Your W-2 reflects past vests, so a recent large vest may not show up there yet. If a big vest is coming, ask your loan officer how it will be treated and whether applying before or after it changes the file.
Selling shares at vest or holding them also affects your liquidity and your reserves. Tax treatment can depend on your situation; borrowers should speak with a qualified tax professional before relying on any deduction or credit.
Common Mistakes
- Qualifying on a peak year. Lenders look at history and trends, and a one-off spike will not carry the file.
- Assuming the ARM is cheaper. Test the reset, not just the start.
- Counting unvested shares. Most lenders will not.
- Assuming every lender treats RSUs alike. Fannie Mae and Freddie Mac differ on details, and jumbo investors differ more.
- Using company stock as your only cushion. Your reserves and your income then fall together.
Does RSU income limit your loan choices? Not by itself. Once the income qualifies, fixed and adjustable structures are generally on the table, with each tested on its own terms. For further reading on adjustable loans in other situations, see Lendmire’s piece Should a Trust Choose ARM or Fixed on a Super Jumbo Loan?.
If RSU history is too thin for your target loan, the usual levers are a smaller loan, more down payment (leverage reaches 90% only on the headline lane, and several lanes stop at 80%), stronger reserves, or waiting for more vesting history.
Frequently Asked Questions
Do unvested RSUs count as income on a jumbo?
Generally no. Lenders want vested, distributed shares with a documented history. Some lenders may look at unvested awards as a sign of continuance, but they rarely count them toward income.
Will an ARM let me borrow more than a fixed loan?
Not necessarily. On the lanes we work with, the adjustable ratio ceiling is lower than the fixed one. Investors may also qualify the ARM at a higher payment than the one you start with.
What happens to my ARM if my RSU income drops after closing?
The loan terms do not change. The reset adjusts to the index and margin regardless of your income. That is why a stress test using a weak vesting year matters before you sign.
Does changing employers affect my RSU income?
Yes, it can. Some guidance ties the qualifying history to RSUs from your current employer, so a job change may restart the clock. Verify this with the lender before you switch.
Can I use a jumbo loan for a second home?
Occupancy decides the leverage. Primary, second-home, and investment occupancy each carry lane-specific limits.
For your own numbers, request a scenario review with Lendmire.
About Lendmire
Lendmire is a mortgage brokerage (NMLS# 2371349) licensed for consumer mortgage lending in 16 states, arranging FHA, VA, conventional and jumbo purchase and refinance loans through a wholesale lending network. Eligibility is determined by the lender on each file. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. FHFA – 2026 county loan limit file
2. Fannie Mae – Selling Guide announcement SEL-2023-11
3. Regulation Z
5. CFPB – Fixed vs. adjustable-rate mortgages
7. CFPB – Consumer Handbook on ARMs
This article is part of Lendmire’s jumbo loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Should You Choose a Jumbo Cash-Out ARM Over a Second Lien? · Is a 7/6 ARM a Sensible Jumbo Cash-Out Structure for Fast Payoff? · How to Match a Jumbo File to the Lane With the Most Leverage
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
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- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Important disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage brokerage. Lendmire is not a direct lender, depository institution, or financial advisor. All loan inquiries are subject to lender underwriting; this article does not constitute a commitment to lend. Rates, terms, and program guidelines are subject to change without notice and vary by borrower profile, property type, and state. Information in this article is general in nature and is not financial, legal, or tax advice. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.