Written by Olukunle Fashina | Last reviewed: October 11, 2026 | Educational information, not personalized financial, tax, or legal advice. Covers: US / UK.
The Federal Reserve raised its target range to 3.75%–4.00% on September 16, 2026, while the Bank of England held Bank Rate at 3.75% on a 6–3 vote the same week. Each move changes the rent a landlord needs, because the mortgage payment is only one line on the bill. Rental income vs mortgage payment is a break-even question, and the answer depends on tax, vacancy, repairs, and rate risk.
⭐ Rental income vs mortgage payment: in this article's assumed examples, rent must reach roughly 1.6 to 1.9 times the monthly mortgage payment to break even after costs, except where you own outright, rent is unusually high, or tax relief shelters the interest. ⭐
The Break-Even Rent Test: One Formula, Five Costs
Rent that merely exceeds your mortgage payment proves nothing. Break-even rent is the monthly rent at which cash flow equals zero after every recurring cost. Use this formula:
Break-even rent = (mortgage + property tax + insurance + repairs + capital reserve) ÷ [(1 − vacancy) × (1 − management fee)]
The denominator matters. If a property sits empty 6% of the year and a manager takes 8% of collected rent, each $1 of rent yields only $0.86. Every input below is labeled "assumed" because your local figures will differ.
Two caveats before the examples. Principal repayment is not an expense in the economic sense, since it builds equity, but it still needs cash every month. And a break-even result says nothing about appreciation, which no one can forecast.
US Example: A $350,000 Rental at 7.00% (Assumed)
Hypothetical: Marcus buys a $350,000 single-family rental with 20% down ($70,000), borrowing $280,000. Freddie Mac's survey put the 30-year fixed average at 6.66% on August 27, 2026, but that survey covers 20%-down borrowers with excellent credit, so Marcus assumes 7.00%.
| Monthly cost (all assumed) | Amount |
|---|---|
| Principal and interest (30 years, 7.00%) | $1,863 |
| Property tax (1.1% of value) | $321 |
| Insurance ($1,800 a year) | $150 |
| Repairs (1% of value a year) | $292 |
| Capital reserve | $100 |
| Fixed costs | $2,726 |
Arithmetic: $2,726 ÷ (0.94 × 0.92) = $2,726 ÷ 0.8648 = $3,152 break-even rent, or 1.69 times the $1,863 payment. At an assumed $2,900 rent, Marcus loses about $217 a month.
His rent is 0.83% of price, below the common 1% screening rule. That rule is a rough filter, not a verdict. The Internal Revenue Service (IRS) lets him depreciate the building over 27.5 years, per Publication 527, but depreciation is a paper deduction that lowers tax, not cash outflow.
Lenders apply their own test. Fannie Mae's Selling Guide nets qualifying rent against the full payment including taxes and insurance, counts any shortfall as a monthly obligation, and allows positive rental income only with 12 months of property management experience.
Credit tier also moves the answer. As Myth vs Reality: Reduce Costs After a Credit Score Drop explains, a lower FICO band raises the rate, and a higher rate raises break-even rent.
UK Example: A £273,000 Buy-to-Let at 5.25% (Assumed)
Hypothetical: Hannah, a higher-rate taxpayer in England, pairs two Office for National Statistics (ONS) averages: the UK average house price of £273,000 (July 2026) and average private rent of £1,400 a month, up 3.8% in the year to August 2026 (provisional), per the ONS September 2026 bulletin. The pairing is illustrative; real yields vary by street. London's averages (£2,332 rent, £569,000 price) imply a lower gross yield, about 4.9% by my calculation.
She puts down 25% (£68,250) and takes an interest-only buy-to-let loan of £204,750 at an assumed 5.25%, against Bank Rate of 3.75% per the Bank of England's September 2026 decision. Council tax is the tenant's (assumed).
| Annual figure (all assumed) | Amount |
|---|---|
| Rent, 12 months | £16,800 |
| Less 5% voids | £15,960 |
| Less agent fee (10% of collected) | £1,596 |
| Less insurance, repairs (1% of value), safety checks | £3,510 |
| Profit before mortgage interest | £10,854 |
| Interest (£204,750 × 5.25%) | £10,749 |
| Pre-tax cash flow | £105 |
Pre-tax, Hannah breaks even. Then tax arrives. HMRC's rules give residential landlords no deduction for interest; instead, GOV.UK says tax is cut by a credit at the basic rate, currently 20%, of finance costs.
Her tax: 40% × £10,854 = £4,342, less 20% × £10,749 = £2,150, leaves £2,192. After-tax cash flow is −£2,087 a year, about −£174 a month. A basic-rate taxpayer in the same position pays about £21 and clears roughly £84.
Her break-even rent is £1,390 before tax but £1,739 after higher-rate tax, 1.94 times the £896 monthly interest. From 2027 to 2028, HMRC sets the property higher rate at 42%, so rerun the test then. Our Secure a Lower Rate: When Remortgaging Makes Sense Now guide covers whether swapping deals is worth the early repayment charge.
Where Leverage Turns Negative
The Little Money Matters Leverage Break-Even Calculator compares two numbers you can compute by hand. Net operating yield is annual profit before financing divided by price. The mortgage constant is annual loan payments divided by the loan.
Marcus: his net operating income at $2,900 rent is $19,745, a 5.64% yield, against a 7.98% mortgage constant ($22,354 ÷ $280,000). Yield below constant means borrowing drains cash. Rent of $2,900 would break even only at about 5.81%.
The Little Money Matters Rate-Shock Stress Test adds one percentage point to the rate. Marcus's payment rises to $2,055 and break-even rent to $3,373. Hannah's interest rises to £12,797, her pre-tax cash flow falls to −£1,943, and her after-tax result to −£4,114. Fixed-rate periods delay this exposure; they do not remove it.
US vs UK: What Counts as Rent Cover
| Question | United States | United Kingdom |
|---|---|---|
| Interest deductible? | Yes, generally, as a rental expense (confirm with a tax professional) | No; basic-rate credit (20% currently, per GOV.UK) |
| Depreciation | 27.5 years for the building (IRS Publication 527) | Not part of this example |
| Central bank backdrop | Fed funds 3.75%–4.00% (Sept 16, 2026) | Bank Rate 3.75% (Sept 2026, 6–3 hold) |
| Lender rent test | PITIA netted; shortfall counts as debt (Fannie Mae) | Lender-specific rent-cover tests; assume 125% for illustration only |
| If it goes wrong | Lender's complaints process first; check your state regulator | Standard buy-to-let sits outside FCA mortgage rules |
Under the assumed 125% rent-cover test, Hannah's £10,749 interest needs £13,436 annual rent, or £1,120 monthly. She passes at £1,400 even though her after-tax cash flow is negative. Lenders test affordability; they do not test your tax bill.
On protection, the Financial Ombudsman Service says most buy-to-let mortgages are unregulated products. Consumer buy-to-let loans for accidental landlords are FCA-regulated and reach the Ombudsman, but an FCA firm-register notice says they carry no Financial Services Compensation Scheme cover. Readers in Canada, Australia, or New Zealand should rerun the same test with their own tax authority's interest rules (CRA, ATO, Inland Revenue).
Little Money Matters Rent Cover Checklist
Run these before making an offer:
- Quote the actual rate for an investment loan, not the headline average.
- Compute break-even rent with your own tax, insurance, and repair figures.
- Compare it with rent from three comparable listings, not asking prices.
- Re-run at the rate plus one percentage point.
- Compute after-tax cash flow, including your marginal rate (UK: the basic-rate credit).
Pass only if you can fund a monthly shortfall from other income. If you want property income without tenants, Compare REITs vs Direct Property Inside a 401(k) Plan sets out that route.
Frequently Asked Questions
Should I buy a rental with negative cash flow?
Only if you can fund the monthly shortfall indefinitely from other income and accept that appreciation is a forecast, not a promise. In Marcus's case, that is about $217 a month; in Hannah's, about £174. If either number would force a sale in a downturn, the position is too leveraged for your finances.
Will my rent count when I apply for a US mortgage?
Often partly. Fannie Mae's Selling Guide nets qualifying rental income against the full housing payment, adds any net rental loss to your monthly obligations, and allows positive rental income only with 12 months of property management experience. First-time landlords may therefore qualify on personal income alone. Your lender's overlays can be stricter than the Guide.
Does Section 24 make buy-to-let unprofitable in the UK?
Not automatically. Since the finance-cost rules took full effect, individual landlords receive a basic-rate credit, currently 20%, instead of a deduction. Basic-rate taxpayers are barely affected in Hannah's example; higher-rate taxpayers lose most. Holding through a limited company changes the tax mechanics but adds costs, so seek a regulated tax adviser.
Is a buy-to-let mortgage covered by the Ombudsman or FSCS?
Mostly not. The Financial Ombudsman Service describes standard buy-to-let borrowers as operating a business, and most such mortgages are unregulated. Consumer buy-to-let loans are regulated and can reach the Ombudsman, but carry no Financial Services Compensation Scheme cover if the firm fails. Ask any lender or broker to confirm your protection in writing.
How does a REIT compare with owning a rental?
A real estate investment trust (REIT) trades like a share through a broker regulated under SEC and FINRA oversight, so there are no tenants or repairs, and no mortgage unless you borrow. The Securities Investor Protection Corporation (SIPC) covers a broker's failure, not market losses. Prices move daily, and you cannot choose the property.
The Caveat That Voids This Test
Everything above assumes a mortgage, a free-market rent, and a hold period long enough to ride out vacancies. It fails if you buy outright, if local rules cap rent increases, or if you plan to live in the property. In those cases, rebuild the formula with your own inputs before trusting any multiple.
Educational information, not personalized financial, tax, or legal advice. Rates, allowances, and rules change; consult a licensed adviser, tax professional, or regulated platform disclosure before acting. Figures marked assumed are illustrations, not forecasts.
Sources & References
- Federal Reserve Board, FOMC statement, September 16, 2026. Supports the 3.75%–4.00% target range.
- Bank of England, Monetary Policy Summary and Minutes, September 2026. Supports Bank Rate at 3.75% and the 6–3 vote.
- Freddie Mac, Primary Mortgage Market Survey, August 27, 2026. Supports the 6.66% 30-year average and the survey's 20%-down, excellent-credit scope.
- Fannie Mae, Selling Guide B3-3.8-01, General Rental Income Information (09/02/2026). Supports PITIA netting, shortfall treatment, and the 12-month experience rule.
- Internal Revenue Service, Publication 527, Residential Rental Property. Supports 27.5-year depreciation and land being non-depreciable.
- HMRC and GOV.UK, Tax relief for residential landlords: how it's worked out. Supports the basic-rate tax reduction on finance costs.
- HMRC, Changes to tax rates for property, savings and dividend income (November 26, 2025). Supports the 42% property higher rate from 2027 to 2028.
- Office for National Statistics, Private rent and house prices, UK: September 2026. Supports average rent, house prices, and London figures.
- Financial Ombudsman Service, Buy-to-let mortgages. Supports the unregulated status of most buy-to-let mortgages.
- FCA, Firm Checker consumer buy-to-let notice (example firm entry). Supports Ombudsman access and no FSCS cover for consumer buy-to-let.
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