"How much house can I afford?" has two answers, and buyers who only get the first one end up house-poor in a beautiful place.
The first answer is what a lender will approve. That's a rules-driven calculation, and the rules are public — they live in federal regulation, not in a lender's judgment. The second answer is what you can carry comfortably once a coastal county's costs land on your statement. On the Grand Strand those two answers diverge more than they do almost anywhere inland, for one specific reason I'll show you below.
If you want the cash side rather than the monthly side — down payment, closing costs, what you spend before the table — that's how much it costs to buy a home in Myrtle Beach.
What a Lender Is Actually Required to Consider
Under the ability-to-repay rule at 12 CFR § 1026.43(c), a creditor "shall not make a loan that is a covered transaction unless the creditor makes a reasonable and good faith determination at or before consummation that the consumer will have a reasonable ability to repay the loan according to its terms."
Eight things go into that determination, per § 1026.43(c)(2):
- Your current or reasonably expected income or assets, other than the value of the home securing the loan
- Your current employment status, if the lender relies on employment income
- Your monthly payment on this loan
- Your monthly payment on any simultaneous loan the lender knows about
- Your monthly payment for mortgage-related obligations
- Your current debt obligations, alimony, and child support
- Your monthly debt-to-income ratio or residual income
- Your credit history
Two details worth pausing on. The lender must verify what it relies on using third-party records — § 1026.43(c)(3) and (c)(4) list tax return transcripts, W-2s, payroll statements including military Leave and Earnings Statements, financial institution records, and government benefit records. And the payment is calculated at "the fully indexed rate or any introductory interest rate, whichever is greater," under § 1026.43(c)(5) — so a teaser rate doesn't buy you qualifying room.
Item 5 is the one this article is really about.
The Definition That Changes Everything on the Coast
Federal regulation defines the term precisely. Per § 1026.43(b)(8):
Mortgage-related obligations mean property taxes; premiums and similar charges identified in § 1026.4(b)(5), (7), (8), and (10) that are required by the creditor; fees and special assessments imposed by a condominium, cooperative, or homeowners association; ground rent; and leasehold payments.
Read what's inside that list against a Grand Strand purchase:
| Mortgage-related obligation | What it means here |
|---|---|
| Property taxes | And whether you get the 4% owner-occupied assessment ratio or the 6% rate changes this number substantially |
| Insurance premiums required by the creditor | On this coast that can be three policies: homeowners, a separate wind and hail policy, and flood |
| Condominium, cooperative, or homeowners association fees and special assessments | Regime dues on a beach condo, and any special assessment |
Every one of those sits inside your debt-to-income ratio, by federal definition, before a single credit card is counted. That is the structural reason a $400,000 house in Conway and a $400,000 oceanfront condo do not qualify the same buyer. Same price, same rate, very different ratio.
I've watched pre-approvals evaporate at exactly this step — not because anything went wrong, but because the lender's opening estimate used inland-sized numbers for taxes, insurance, and dues, and the real ones came in later.
The Ratios That Actually Exist, by Loan Type
There is no single national DTI limit. Different programs set different standards, and two of them are written directly into federal regulation:
| Program | The standard | Where it's written |
|---|---|---|
| VA | Debt-to-income standard is 41 percent or less — computed from PITI plus "homeowners and other assessments such as special assessments, condominium fees, homeowners association fees, etc., and any long-term obligations" divided by gross income. Plus a residual income test (below). | 38 CFR § 36.4340(d) |
| USDA Guaranteed | PITI ratio of 29 percent — including HOA dues, the monthly calculation of the annual fee, and other real estate assessments — and a total debt ratio of 41 percent. Exceedable with documented compensating factors. | 7 CFR § 3555.151(h) |
| FHA | Set by HUD's underwriting handbook and the automated underwriting result — ask your lender for the specific ratio your file is being run under. | HUD |
| Conventional | Set by the loan program and the automated underwriting decision. | Ask your lender in writing |
The VA and USDA numbers are the two I'd memorize if you're buying here, because between the military presence along this coast and how much of inland Horry County is USDA-eligible territory, one of them applies to a large share of Grand Strand buyers.
Note the phrasing in both: HOA and condo fees are named explicitly. Neither program lets you argue them out of the ratio.
The VA Residual Income Table Nobody Shows You
The VA's second test is the one that separates it from every other loan program, and it's the reason I like VA financing on this coast. Rather than only asking what percentage of your income the payment eats, 38 CFR § 36.4340(e) asks what's left over — "whether the veteran's monthly residual income will be adequate to meet living expenses after estimated monthly shelter expenses have been paid and other monthly obligations have been met."
South Carolina sits in the VA's South region (the regulation lists it alongside North Carolina, Georgia, Florida, Virginia and the rest). For loan amounts of $80,000 and above, the South guideline figures are:
| Family size | South region residual income |
|---|---|
| 1 | $441 |
| 2 | $738 |
| 3 | $889 |
| 4 | $1,003 |
| 5 | $1,039 |
For families larger than five, the regulation adds $80 for each additional member up to a family of seven, and "family" includes all members of the household — counted even if a spouse isn't on the note. (A separate, lower table applies to loan amounts of $79,999 and below.)
Three provisions in that section are worth knowing before you apply:
- A 41% ratio isn't a hard wall. Under § 36.4340(c), the VA says a veteran "must meet both standards" ordinarily, but failure on one "will not automatically disqualify." A ratio over 41 percent can be approved with written justification signed by the underwriter's supervisor.
- Strong residual income can remove that step entirely. § 36.4340(c)(3): if the ratio is greater than 41 percent and residual income exceeds the guidelines by at least 20 percent, "the second level review and statement of justification are not required."
- Active duty and military retirees get an adjustment. § 36.4340(e)(4) reduces the residual income figures "by a minimum of 5 percent if there is a clear indication that the borrower or spouse will continue to receive the benefits resulting from the use of facilities on a nearby military base."
If you're a veteran shopping here and a lender tells you flatly that your ratio disqualifies you, that lender is describing its own overlay, not the regulation.
The Four Grand Strand Costs That Eat Your Ratio
Because mortgage-related obligations are inside the ratio, these four aren't lifestyle considerations. They're qualifying math.
1. The assessment ratio on your property taxes. South Carolina assesses owner-occupied property at 4% and everything else at 6%, and the 4% is something you apply for — it doesn't attach itself to you at closing. If you're buying a second home or a rental, you're underwriting at the higher number. The 4% vs 6% assessment ratio explains the gap, and what happens to your taxes the year you buy explains why the seller's current bill is a bad planning number.
2. Wind and hail as a separate policy. Coastal South Carolina is one of the places where wind coverage can be excluded from the homeowners policy and written separately, with its own premium. If your lender requires it, it's a mortgage-related obligation. Wind can be excluded here — and only here.
3. Flood insurance where the zone requires it. Whether a policy is required at all is a mapped-zone question with a definite answer for any specific address. Why the zone decides what your lender can do.
4. HOA or regime dues. Named explicitly in the federal definition, in the VA standard, and inside USDA's 29% ratio. On a condo, dues also fund the master insurance and reserves — and a thin reserve is a future special assessment, which is also a mortgage-related obligation. Ask for the reserve study before you're under contract.
How I'd Actually Approach It
- Get pre-approved with real coastal numbers, not defaults. Ask your loan officer, in these words: what taxes, what insurance, and what HOA dues are in this approval? If the answer is a generic percentage, the approval is soft.
- Ask which ratio your file is being run under, and whether it's a program standard or the lender's own overlay. Those are different things, and only one of them is negotiable by changing lenders.
- If you're a veteran, ask for the residual income calculation. It's a right-sized way to look at affordability, and it's in the regulation.
- Model the payment with all four coastal costs in my mortgage calculator, and then model it again with an insurance figure 30% higher, just to see whether the house still works.
- Decide your own ceiling before you tour anything. The approval is a maximum, not a recommendation. Nobody at a lender is thinking about your travel, your boat, or your kid's braces.
- Then pick the geography. Best places to live on the Grand Strand is built for narrowing down once you know the budget.
And before you assume you're on your own for the down payment: South Carolina's SC Housing programs may change what's within reach. My first-time buyer's guide covers the menu.
Frequently Asked Questions
What debt-to-income ratio do I need to buy a house? It depends entirely on the loan. The VA's written standard is 41 percent or less, with exceptions. USDA's guaranteed program sets a 29 percent PITI ratio and a 41 percent total debt ratio, exceedable with documented compensating factors. Conventional and FHA thresholds come from the automated underwriting result and your lender's overlays — get yours in writing rather than trusting a number you read somewhere.
Do HOA fees count against me? Yes, and this isn't a matter of lender preference. Regulation Z defines mortgage-related obligations to include "fees and special assessments imposed by a condominium, cooperative, or homeowners association," the VA's ratio names condominium and homeowners association fees explicitly, and USDA folds HOA dues inside its 29 percent PITI ratio.
Does flood or wind insurance count? If your creditor requires the policy, it falls within the "premiums and similar charges … required by the creditor" language of the mortgage-related obligations definition. On the coast, that's a real and sometimes large number inside your ratio.
I'm a veteran and my DTI is over 41%. Am I out? Not automatically. 38 CFR § 36.4340(c) provides for approval above 41 percent with written justification signed by the underwriter's supervisor, and waives the second-level review entirely when residual income exceeds the guidelines by at least 20 percent.
Can I qualify for more by putting less down? Usually the reverse — a smaller down payment means a larger loan, a larger payment, and often mortgage insurance, all of which push the ratio up. The VA is the notable exception, since it requires no down payment and, per the VA, "no need for private mortgage insurance (PMI) or mortgage insurance premiums (MIP)."
Why is my pre-approval smaller here than the online calculators said? Because most calculators estimate taxes and insurance from national averages and ignore HOA dues entirely. On the Grand Strand all three can be materially larger, and all three are inside the ratio.
How long is a pre-approval good for? Ask your lender — it varies, and it depends on how current your documentation is. Related but different: under 12 CFR § 1026.19(e), a Loan Estimate has its own expiration mechanics, including a revision trigger when you indicate intent to proceed more than 10 business days after it was provided.
Let's Find Your Real Number
The version of this that helps you is the one run on actual addresses in the areas you're considering, with actual tax ratios, actual insurance quotes, and actual dues.
That's a conversation I have with buyers every week. Get in touch and we'll build the number together — my resources page lists the lenders I work with, and you can browse current listings once you know what you're shopping for.
One note specific to this topic: the ratios above are program standards written into federal regulation. Individual lenders layer their own stricter overlays on top, and those vary by lender — so ask whether a number you're quoted is the program's or the lender's.
Thinking about making the move to the Grand Strand?
Whether you're relocating from up north or planning your retirement on the South Carolina coast, I'd love to help you get there. Follow me on Facebook for more local tips, search Grand Strand listings right here on my site, and join one of my Facebook groups built specifically for people making this move:
