Key takeaways
- Twenty percent is not a requirement. It is the LTV threshold where PMI generally is not required at origination.
- Down payment is a four-way trade: payment size, mortgage insurance, cash reserves, and what else the cash could do.
- Mortgage insurance is priced in LTV tiers, so crossing a tier boundary can matter more than the raw dollar difference.
- Reserves after closing affect both qualification and your ability to absorb a surprise — do not spend them to hit a round number.
- Holding period is decisive: PMI you can remove in a few years is a different cost than PMI you carry for a decade.
- Model the tiers side by side with your own numbers rather than accepting a default assumption.
Which conventional programs allow 3% down?
These 97% LTV purchase options generally concern eligible one-unit principal residences, not second homes, investments or every manufactured-home scenario. Fannie Mae high-balance loans are ineligible for 97% financing under Standard 97 and HomeReady.
| Program | First-time buyer | Income | Qualification detail |
|---|---|---|---|
| Fannie Mae Standard 97 | At least one borrower | No program income cap | Desktop Underwriter; fixed rate up to 30 years; no high-balance 97% |
| Fannie Mae HomeReady | Repeat buyers may qualify | Generally at or below 80% of area median income | 97% option requires DU and fixed rate; reduced MI coverage may affect costs |
| Freddie Mac HomeOne | Qualifying first-time buyer | No borrower income or geographic restriction | Fixed-rate one-unit principal home; manufactured housing restrictions |
| Freddie Mac Home Possible | Not universally required | Qualifying income capped at 80% of AMI | Up to 97% LTV for eligible one-unit fixed-rate; other configurations differ |
Sources: Fannie Mae 97% comparison, HomeReady eligibility, HomeOne, Home Possible and its fact sheet.
Homebuyer education may be required, particularly when all occupying borrowers are first-time buyers. Ask before paying for a course. AMI eligibility uses program qualifying income and property location, not simply a tax-return total.
See the conventional loan requirements guide for credit, income, DTI and reserve considerations.
Down payment, cash to close and reserves
On a hypothetical $320,000 purchase, down payment alone is $9,600 at 3%, $16,000 at 5%, $32,000 at 10%, or $64,000 at 20%. These percentages do not guarantee eligibility.
Assume $25,000 savings, a $16,000 down payment and $7,000 of closing costs, prepaids and initial escrow deposits, with no credits or prior deposit. Cash needed is $23,000, leaving $2,000. Actual costs vary. Earnest money already paid normally reduces the remaining cash due, rather than adding another down payment. Eligible reserves are assessed after closing and differ from a personal emergency-fund target; preserve funds for moving and repairs. Compare with the down-payment calculator and PMI guide.
The four-way trade
Most down payment advice collapses into a single rule of thumb, and rules of thumb hide the decision. Every additional dollar of down payment does four things at once: it lowers the loan amount, it lowers loan-to-value (which may reduce or eliminate mortgage insurance), it removes a dollar from your post-closing reserves, and it forgoes whatever else that dollar could have done.
A good decision weighs all four against your actual situation — how long you plan to keep the loan, how much cash you need to feel safe, and how sensitive your qualification is to reserves.
LTV, and why tiers matter
Loan-to-value is the loan amount divided by the property value (generally the lesser of price and appraised value). It is the single number that connects your down payment to mortgage insurance, and it is evaluated in tiers rather than continuously.
Because pricing moves at tier boundaries, adding a modest amount of cash can produce a disproportionate improvement if it crosses a boundary — and almost none if it does not. That is why comparing two specific scenarios beats optimizing a percentage in the abstract.
Comparing down payment tiers
| Down payment | Resulting LTV | Mortgage insurance | Typically considered when |
|---|---|---|---|
| 3% | 97% | PMI generally applies; premium varies by program and borrower | Buying sooner matters more than payment size and reserves are thin |
| 5% | 95% | PMI generally applies; quoted premium varies | Balancing entry cost against keeping meaningful reserves |
| 10% | 90% | PMI generally applies; quoted premium varies | Payment and MI matter but full 20% would exhaust cash |
| 15% | 85% | PMI generally applies; quoted premium varies | Close to avoiding MI while preserving a cushion |
| 20% | 80% | Generally not required at origination | Cash is available without draining reserves |
| More than 20% | Below 80% | Not required at origination | Payment reduction is the priority and the cash has no better use |
Program availability, mortgage insurance pricing, and eligibility vary by lender, credit profile, occupancy, and property type. The worked cash figures are hypothetical down payments, not offered mortgage pricing.
How PMI enters the decision
Private mortgage insurance is a financing cost that can allow a smaller initial down payment. For covered borrower-paid PMI on a single-family principal residence, cancellation can be requested at the applicable original-value threshold when conditions are met; automatic termination follows the scheduled balance.
That changes the arithmetic. PMI carried for a few years while equity builds is a very different cost from PMI carried for a decade. Your expected holding period, and the pace at which the loan amortizes, belong in the comparison.
Reserves and opportunity cost
Where it tends to help
- A larger down payment lowers the loan amount and the monthly payment.
- Reaching 80% LTV generally removes mortgage insurance at origination.
- Lower LTV can improve how a file is viewed across several qualification factors at once.
- Less borrowed principal means less total interest over the life of the loan.
Trade-offs to weigh
- Cash spent on a down payment is no longer available for emergencies or repairs.
- Reserves themselves are a qualification factor; spending them can weaken the file.
- The cash may have alternative uses, including paying off higher-cost debt.
- Home equity is illiquid — retrieving it later requires a refinance or a sale.
A useful discipline: decide the minimum post-closing cash cushion you will not go below, subtract closing costs and moving expenses, and treat only what remains as available for down payment.
Worked examples
Where the funds come from
Conventional programs define eligible sources of down payment funds, documentation, and seasoning. Gift funds are permitted in defined circumstances that vary by occupancy and program, and down payment assistance programs exist at state and local levels with their own eligibility rules.
Because documentation matters as much as the amount, confirm eligible sources with a licensed loan officer before transferring money between accounts. Unexplained deposits are one of the most common avoidable delays in underwriting.
Myths worth retiring
- Myth: You must put 20% down on a conventional loan.
- Twenty percent is the LTV threshold where PMI generally is not required at origination, not a minimum contribution.
- Myth: PMI is money thrown away.
- PMI is the cost of entering with less cash, and on a conventional loan it is generally removable rather than permanent.
- Myth: Bigger down payment is always the safer choice.
- Spending reserves to lower LTV can leave you less able to absorb a shock right after closing, when risk is highest.
- Myth: Every extra dollar improves pricing equally.
- Mortgage insurance and pricing move in tiers, so the value of an extra dollar depends on where you sit relative to a boundary.
- Myth: You can add cash later to remove PMI instantly.
- Removal follows defined rules and thresholds; the process and timing are not the borrower's choice alone.
Common mistakes
- Assuming 20% is required and delaying a purchase for years to reach it.
- Draining reserves to hit a specific LTV, then having nothing left for repairs or a gap in income.
- Comparing down payment scenarios that use different rate, points, or escrow assumptions.
- Ignoring the expected holding period when weighing mortgage insurance cost.
- Moving money between accounts without confirming documentation and seasoning requirements first.
- Forgetting that closing costs and moving expenses sit alongside the down payment in the same cash pool.
Questions for a licensed loan officer
- Can you show me the same scenario at two or three down payment tiers, with identical assumptions?
- Where is the nearest LTV tier boundary for my file, and what does crossing it change?
- How is mortgage insurance structured in each scenario, and what ends it?
- What reserves do you expect after closing for this occupancy and property type?
- Which down payment sources are eligible for my program, and what documentation is needed?
- If I keep more cash instead, does that strengthen or weaken my file?
Frequently asked questions
Is 20% down required on a conventional loan?
No. Twenty percent is the loan-to-value threshold at which private mortgage insurance generally is not required at origination. Conventional programs exist with lower down payments, typically with mortgage insurance until the loan reaches the applicable equity threshold.
Does a larger down payment always save money?
Not automatically. A larger down payment lowers the loan amount, the monthly payment, and mortgage insurance exposure, but it consumes cash that could serve as reserves or be used elsewhere. Whether the trade is worth it depends on your reserves, holding period, and alternatives for the cash.
What counts as an acceptable source of down payment funds?
Conventional programs specify eligible sources and documentation, and gift funds are permitted in defined circumstances that vary by occupancy and program. Confirm eligible sources and seasoning requirements with a licensed loan officer before moving money.
How does the down payment interact with mortgage insurance pricing?
Mortgage insurance is priced against loan-to-value and credit profile together, in tiers. Moving across a tier boundary can change the cost more than a similar move inside a tier, which is why small changes in down payment sometimes matter more than large ones.
Should I put less down and keep more in reserves?
That is a legitimate strategy, and it is the trade this page exists to make visible. Reserves affect qualification and your ability to absorb a shock after closing. Neither answer is universally right; model both with your own numbers.
Tools and next steps
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Sources
Primary sources relied on for this page. Check scope varies by entry; a source check is not a licensed or human compliance review.
- Freddie Mac — Home PossibleFreddie Mac · Status: Verified (see check notes) · Published/effective: unverified · Last checked: 2026-09-25
What was checked
Checked the 80% of area median income qualifying-income limit, no universal first-time-buyer requirement, and eligible one-unit fixed-rate purchases up to 97% loan-to-value. Other configurations differ. Editorial source check only; not a licensed human or compliance review.
- Fannie Mae 97% LTV OptionsFannie Mae · Status: Verified (see check notes) · Published/effective: unverified · Last checked: 2026-09-25
What was checked
Checked Standard 97's first-time-buyer condition and lack of an income cap, 97% LTV eligibility, and the high-balance exclusion for Standard 97 and HomeReady. The historical 620-score FAQ is superseded by the current credit-score section. Editorial source check only; not a licensed human or compliance review.
- Selling Guide B5-6-01 — HomeReady Mortgage Loan and Borrower EligibilityFannie Mae · Status: Verified (see check notes) · Published/effective: unverified · Last checked: 2026-09-25
What was checked
Checked the 80% of area median income limit, repeat-buyer eligibility, Desktop Underwriter and fixed-rate purchase eligibility at 97% LTV, and reduced mortgage-insurance coverage. Editorial source check only; not a licensed human or compliance review.
- Freddie Mac HomeOneFreddie Mac · Status: Verified (see check notes) · Published/effective: unverified · Last checked: 2026-09-25
What was checked
Checked the first-time purchase condition, lack of income and geographic caps, eligible fixed-rate one-unit primary homes, and manufactured-home limitations. Editorial source check only; not a licensed human or compliance review.
- Freddie Mac Home Possible Fact SheetFreddie Mac · Status: Verified (see check notes) · Published/effective: unverified · Last checked: 2026-09-25
What was checked
Checked the 80% of area median income limit and eligible one-unit fixed-rate 97% LTV terms. Editorial source check only; not a licensed human or compliance review.
Related guides and calculators
- What Is a Conventional Loan?
A plain-English explanation of conventional loans: how they work, who they may fit, and key decision factors.
- PMI Costs and Removal: The 80% and 78% Rules | Conventional.Loans
See how conventional-loan PMI is calculated, compare 80% cancellation with 78% termination, and plan next steps with a calculator.
- Down Payment Calculator
Model down payment percentage, loan-to-value, and cash-to-close scenarios for a conventional purchase.
- PMI Removal Timeline Calculator
Estimate when scheduled amortization brings a conventional loan to 80% LTV for potential PMI removal.
- First-Time Home Buyer Guide
Conventional-loan options that may fit first-time buyers, and the decision factors that matter most.
- Home Affordability Calculator
Estimate a purchase price range from income, debts, and a DTI cap you can edit.
Ready to turn this into a plan?
Build a browser-only Conventional Loan Blueprint first, then continue with a licensed loan officer at Bolt Home Loans LLC, NMLS 2784913. Nothing here is an application, approval, preapproval, rate quote, or commitment to lend.
