Headline Rent vs Net Effective Rent: How Incentives Distort Irish Rent Reviews

TL;DR

Headline rent is the figure stated in the lease. Net effective rent is the economic rent the landlord actually receives after subtracting tenant incentives (rent-free periods, fit-out contributions, stepped rents, surrender premiums) and amortising them across the lease term or to first break. In Irish commercial leases in 2026, net effective rent commonly sits 10 to 25 percent below headline — and rent review valuers, investors and asset managers must distinguish between the two to avoid mispricing.

The difference, simply

Headline rent is the gross figure. If a lease states 'rent of 100,000 euro per annum', that's headline. Net effective rent answers the question: 'after all incentives, what is the landlord actually receiving over the lease term, expressed as an annual figure?'

The four incentives that drive the gap

1. Rent-free periods

A rent-free at lease commencement (or after a break date) defers payment but does not extinguish it for headline purposes. A five-year lease with 12 months rent-free at 100,000 euro headline produces 400,000 euro of total receipts. Annualised over the term, net effective rent is 80,000 euro — a 20 percent discount to headline.

2. Fit-out contributions

Landlord cash contributions to tenant fit-out are economically a reduction in rent. A 250,000 euro fit-out contribution on a 10-year lease at 100,000 euro headline produces a net effective rent of 75,000 euro (1,000,000 minus 250,000 over 10 years).

3. Stepped rents

Where the rent rises through the term (50,000 euro year 1, 75,000 year 2, 100,000 thereafter), the net effective rent is the equivalent flat figure across the term, often discounted to present value.

4. Reverse premiums and other inducementsCash payments from landlord to tenant on signing, take-over of tenant's existing lease obligations, or other monetary inducements are all economically reductions in rent and should be netted into the calculation.

How to calculate net effective rent — straight-line method

The simplest method: total rent receivable over the term minus total incentives, divided by lease length (or by lease length to first break). For a 10-year lease at 100,000 euro headline with 18 months rent-free and a 200,000 euro fit-out contribution: total rent receivable = 1,000,000 minus 150,000 (rent-free) minus 200,000 (fit-out) = 650,000. Net effective rent = 65,000 euro per annum, a 35 percent discount to headline.

How to calculate net effective rent — present value method

For comparability across leases of different lengths, discount future cash flows at a target IRR (often 5 to 8 percent in Irish commercial valuation contexts) and back out the equivalent flat rent. Present value method is the institutional standard and is used by Red Book valuers when comparing rents across heterogeneous lease structures.

Why this matters for rent reviews

In an Irish rent review on a pre-2010 lease with UORR or on a post-2010 review without floor, the question 'what is open market rent' is answered using comparable evidence. If a recent letting was at 100 euro per sq ft headline with 24 months rent-free and a fit-out contribution, the valuer must net-effectivise the comparable before using it. Using the headline figure inflates the apparent market rent; using the net effective figure produces the right open-market answer.

Rent review arbitrators and expert determiners in Ireland routinely focus on this distinction, and submissions that fail to address it are typically discounted.

Why this matters for investment underwriting

A purchaser bidding on an Irish commercial asset must understand the net effective rents underlying the headline schedule. Two assets with identical headline rent rolls can have materially different cash-flow profiles depending on incentive structure. Bidders who pay on headline rather than net effective overpay.

Frequently asked questions

What is the difference between headline rent and net effective rent?

Headline rent is the gross figure in the lease. Net effective rent is the economic figure the landlord actually receives after incentives — rent-free periods, fit-out contributions, stepped rents and reverse premiums — are netted off and amortised across the term.

Are rent-free periods accounted for in rent review comparables?

Yes — they should be. The comparable rent used in a rent review valuation should be the net effective rent of the comparable letting, not the headline. Failing to net-effectivise comparable evidence is a common reason rent review submissions are discounted in arbitration.

Do fit-out contributions count as rent for rent review purposes?

Fit-out contributions are economically a rent inducement. For rent review valuation purposes they should be amortised over the lease term (or to first break) and netted off the headline to derive the net effective rent.

How big is the typical gap between headline and net effective rent in Ireland?In 2026 Irish commercial leases, the gap typically runs 10 to 25 percent depending on market conditions, sector and lease length. Prime Dublin office leases at the top of the market currently see net effective rents 15 to 20 percent below headline.

Should I use net effective rent for investment valuation?

Yes — institutional valuation practice and Red Book methodology both rely on net effective rent. Headline-based valuation overstates income and produces incorrect yields.

HPS Real Estate represents landlords and tenants in commercial rent reviews and provides Red Book valuations across Ireland. Contact info@hpsproperty.ie.