Rent rose 7%. Mortgage interest rose 10.8%. Which figure matters if you are thinking of buying?

What did the new figures say?

Is buying now cheaper than continuing to rent? Two striking figures published on 11 November invite a quick answer, but they do not provide one.

The Central Statistics Office reported that rents were 7% higher in October 2026 than a year earlier, while mortgage-interest costs were 10.8% higher. Over five years, the rent index rose 36% and the mortgage-interest index 98.3%. Both were at historically high levels in their respective series (Central Statistics Office, 2026).

Those figures matter because they describe pressure on household budgets. They do not mean that every tenant's rent increased by 7%, that every borrower's monthly payment rose by 10.8%, or that buying became a particular percentage more expensive than renting. The release measures national price movements, not the euro cost of two equivalent homes.

Why the two percentages cannot be compared directly

The CSO rent index combines private and local-authority rents using national CPI weights. In the year to October, its private-rent component increased by 5.5% and its local-authority component by 12.7%. It is not an index of advertised rents on property portals, and it supplies no separate figure for Strokestown, Rooskey or Roosky, Dromod or Drumod, Carrick-on-Shannon, Mohill, Longford town or the other localities in this region (Central Statistics Office, 2026).

The mortgage-interest index is narrower than a mortgage repayment. It tracks the interest cost on a standard set of mortgages. A normal monthly repayment also reduces the capital borrowed, which helps the borrower build equity. The index is affected by interest rates and the level of mortgage debt; it is not the purchase price of a house and does not include the principal repaid.

There is another limitation. The CSO analysis expressly excludes domestic energy. It does record five-year increases of 19.3% for household maintenance services and 14.1% for maintenance materials. Those are national trends, but they reinforce a practical point: the condition and energy performance of a residence can matter as much as the headline mortgage rate.

Start with the home you could actually buy

A useful comparison begins with two real alternatives: the tenancy you have and the property you could buy. Write down the current rent, any known review date, the length of time you expect to stay and what the home provides for work, school, family life and travel. Then compare that with a lender's current repayment illustration for the purchase price and deposit you can realistically fund.

The Central Bank recorded a weighted average rate of 3.53% on new mortgage agreements in August 2026. Fixed-rate agreements averaged 3.49%, variable agreements 4.16%, and fixed-rate products accounted for 94% of new agreement volume. These are national averages from August, not a rate available to every applicant in November. A borrower's loan-to-value ratio, income, term, product and lender all affect the actual offer (Central Bank of Ireland, 2026).

If the proposed mortgage is fixed, examine the payment during the fixed period and a plausible payment after it. Do not quietly assume that today's fixed rate lasts for the full mortgage term. Equally, do not treat all of a repayment as a lost cost: the interest, fees and upkeep are costs, while capital repaid increases the owner's stake in the property.

Count the costs that sit outside the monthly repayment

The Competition and Consumer Protection Commission advises buyers to compare the interest rate and total mortgage cost, while allowing for legal fees, stamp duty, valuation, survey, insurance and the expense of moving and furnishing a home. It also explains the difference between fixed and variable rates (Competition and Consumer Protection Commission, 2026).

For an older rural house, add the cost and timing of urgent work. A roof, wastewater system, heating upgrade or damp problem cannot be wished out of the budget because the asking price looks affordable. For an apartment, examine the management company's finances and charges. For any home, consider property tax, insurance, maintenance, energy and transport.

Renting has its own trade-offs: the rent paid does not build ownership, and the household may value greater security or control over the property. Buying reduces flexibility and concentrates money in one asset. The sensible answer depends on how long the household expects to remain, whether it has an emergency reserve after the deposit and whether the chosen house fits without relying on an optimistic renovation estimate. This is general property analysis, not personal financial advice.

What can the figures tell us locally?

They establish a national context, not a town-level result. They cannot tell us whether a particular rent in Carrick-on-Shannon is high for that home, whether a house in Longford town represents value, or whether a residence near Dromod station will suit one family's travel pattern. Local availability, property condition, broadband, services and the actual journey to work can alter the decision materially.

The same caution applies to sellers. Rising national rents do not automatically make every property more valuable to an investor, and a national mortgage-interest increase does not prove that buyers have disappeared. A valuation should use relevant completed sales, the house's condition and accommodation, its setting and the finance available to the likely buyer. Asking prices are evidence of sellers' expectations; they are not completed-sale evidence.

My view is that the new CSO release is most useful as a prompt to do the comparison properly. It shows that neither side of the tenure decision is standing still. It does not supply a shortcut around the individual property, the household budget or the buyer's plans.

The decision in one sentence

Do not choose between a 7% rent figure and a 10.8% mortgage-interest figure. Compare the real tenancy with the real house, use the mortgage offer rather than a national average, allow for the work and running costs, and ask whether the home still fits if circumstances become less favourable.

That approach is less dramatic than declaring that renting or buying always wins. It is also much more useful to a household deciding where to make a home in Roscommon, Leitrim or Longford.