The short version
Short answer: Gross rental yield is annual rent divided by property price. Net rental yield subtracts the real annual costs first. On the labeled hypothetical below, a property that advertises 5.4 percent gross returns 3.9 percent net, and the gap is entirely ordinary costs that every landlord pays. Yield is a comparison tool, not a promise, and every number in this guide is a worked example, not market data.
This is educational content about a calculation. It is not financial advice, and it does not recommend any property, market, or purchase.
The two formulas
The standard definitions, as published in investor guidance on rental yield calculation, are:
- Gross rental yield = (annual rent / property value) x 100
- Net rental yield = ((annual rent - annual expenses) / property value) x 100
Annual rent means the rent charged across a full year at the agreed rate: monthly rent x 12, or weekly rent x 52. Annual expenses means the recurring cost of keeping the property let and in repair. Two judgment calls hide inside the net formula, and you need to state both:
- The denominator. Property value can mean the purchase price, or the all-in acquisition cost including closing costs and transfer taxes. The all-in version is stricter and gives a lower yield.
- The vacancy allowance. Rent is rarely collected for 52 perfect weeks. A vacancy allowance, expressed as a percentage of annual rent, converts the theoretical rent into expected rent.
A worked example, fully labeled
Every figure in this section is hypothetical, chosen to make the arithmetic easy to follow and rerun with your own numbers. It is not a price, rent, or cost estimate for any real place.
The property (hypothetical): purchase price $400,000. Market rent $1,800 per month.
Step 1: gross yield. Annual rent = $1,800 x 12 = $21,600. Gross yield = $21,600 / $400,000 x 100 = 5.40 percent.
That is the number a listing can advertise and a landlord will never actually receive, because no property runs at zero cost.
Step 2: the annual cost stack (all hypothetical).
| Cost line | Basis | Annual amount |
|---|---|---|
| Vacancy allowance | 5% of annual rent | $1,080 |
| Insurance | flat assumption | $1,200 |
| Maintenance and repairs | flat assumption | $2,000 |
| Management fee | 8% of collected rent ($20,520) | $1,642 |
| Total annual costs | $5,922 |
Collected rent means rent after vacancy: $21,600 - $1,080 = $20,520. A management fee charged on collected rent is standard practice in many markets; if your manager charges on scheduled rent instead, the fee line rises and the yield falls. Read the management agreement, not the brochure.
Step 3: net yield. Net income = $21,600 - $5,922 = $15,678. Net yield = $15,678 / $400,000 x 100 = 3.92 percent.
Step 4: the stricter denominator. Suppose the all-in cost of buying, including closing costs, transfer taxes, and inspections, came to $412,000 on the same hypothetical purchase. Recomputed on the all-in basis, net yield = $15,678 / $412,000 x 100 = 3.81 percent. Same property, same rent, two defensible answers 0.11 points apart. This is why two investors can quote different yields for the same house and both be doing the arithmetic correctly: they chose different denominators. State yours.
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What moves the number most
Sensitivity matters more than precision. Using the worked example:
- One extra empty month removes $1,800 of rent, about 0.45 points of net yield on the purchase-price basis. Vacancy is the single largest lever most small landlords control, through pricing, condition, and tenant retention.
- A $100 per month rent increase, if the market genuinely supports it, adds $1,200 a year, about 0.30 points of gross yield before costs. Rent set above what comparable homes achieve usually gives the gain back as vacancy.
- A management fee 2 points higher (10 percent instead of 8) costs about $410 a year at this rent, roughly 0.10 points. Small, real, and worth knowing before you sign.
- One major repair (a water heater, a roof section) can consume a full year of the maintenance line in a single invoice. The maintenance assumption is an average across years, not a yearly guarantee; a reserve fund is what makes the average true.
The discipline is to rerun the formula with pessimistic inputs, not average ones, and see whether the purchase still makes sense to you. Our affordability guide applies the same pessimistic-input discipline to owner-occupier budgets.
Yield is not cash flow, and neither is a return
Three numbers get confused constantly:
- Yield measures rent against property value, with no loan involved. It compares properties.
- Cash flow is what remains after the mortgage payment and every bill, in your actual financing. It measures your monthly position.
- Total return adds capital growth or loss, principal repaid, and tax effects across the holding period. It can only be known afterward.
A property can show a healthy net yield and negative cash flow if the mortgage is large and short. Another can show a modest yield and strong total return if values rise. None of the three numbers substitutes for the others, and a seller quoting only the most flattering one is telling you which one to ask about. The home buying guide sequences the checks that sit around this calculation, from budget to keys, and the closing costs guide itemizes the acquisition costs that belong in the stricter denominator.
The break-even rent check
The same arithmetic runs backward, and the backward version is often the more useful question: what rent would this property need to reach a target net yield? Rearranged, required net income equals the target yield multiplied by the price, and required rent equals that income plus expected annual costs. On the labeled hypothetical ($400,000 price, $5,922 of costs at the worked rent), a 5 percent net target needs $20,000 of net income, which means roughly $25,922 of collected-plus-vacancy rent across the year, about $2,160 per month before the vacancy allowance is added back. If comparable homes in that (invented) neighborhood let at $1,800, the target is not achievable at that price, and the options are a lower price, a lower target, or a different property. Run this check before an offer, not after a purchase; it converts a feeling about a listing into a number a seller's asking price has to answer.
Condo versus house: the cost stack changes shape
The formula does not change between property types; the cost lines do. A condominium or strata unit typically adds a monthly service charge that can be the largest single cost line, and it often bundles items a house landlord buys separately, such as building insurance or exterior maintenance. A detached house usually has no service charge but carries the full weight of roof, structure, and grounds. Two properties at the same price and rent can therefore show identical gross yields and materially different net yields, which is precisely why gross yield alone misleads. When you compare across types, list the bundled and unbundled lines explicitly instead of assuming the categories match.
Four yield mistakes that flatter bad purchases
- Using the asking rent. The seller's hoped-for rent is marketing. Use signed or comparable achieved rents, or lower the input and label it.
- Forgetting the vacancy line entirely. Zero vacancy is not conservative in any market; even excellent properties turn over.
- Counting the mortgage as yield's job. Yield compares properties. Cash flow, computed separately with your real loan terms, judges your monthly position.
- Annualizing a good month. A single strong month, a one-off fee, or a short-stay premium treated as permanent rent inflates the numerator all year.
A landlord's pre-purchase yield checklist
- Confirm the achievable rent from current comparable lettings, not the seller's asking rent.
- Choose your denominator (price or all-in cost) and write it on the worksheet.
- List every recurring cost: vacancy allowance, insurance, maintenance, management, property tax, service or strata charges, licensing where required.
- Compute gross, then net, then net on the all-in basis.
- Stress the net figure: one extra empty month, one major repair, a fee increase.
- Compute cash flow separately with your real financing terms.
- Compare only against properties evaluated on the identical basis.
Where the formulas come from
The gross and net definitions used here follow published investor guidance on rental yield calculation, including Your Investment Property Magazine's investor guide to calculating rental yield (gross: annual rental income divided by property value; net: the same after annual expenses, with total property cost optionally including purchase-side fees) and August's rental yield calculator guide (gross yield as annual rent over property value, net yield after running costs such as management, service charges, and time between tenancies). The worked example's inputs are this site's own labeled hypotheticals, not figures from those sources or any market.
State your basis before you compare
Yield arithmetic is exact; the inputs are estimates. The landlords who get hurt by this calculation are rarely wrong in the division; they are wrong in the vacancy line they assumed, the repair they did not reserve for, or the denominator they quietly switched. Run the formula on pessimistic inputs, state your basis, and let the number do the one job it is good at: comparing properties on equal terms before emotion and marketing get a vote. For the same comparison run on an actual market instead of a labeled hypothetical, the Prairie yield analysis works through regional cap rates across the Prairie cities and what drives the gap against the coastal markets.
