If you only take one thing from this guide: evaluate software against the 2026 version of your job — annual RTB registration on every tenancy, the national rent cap, and rent matched across client accounts — not against a feature list written for a different country.

What an agency needs that single-landlord apps lack

Most "landlord apps" are built for one person managing their own few properties. An agency is a different animal: you manage tenancies on behalf of many landlord clients, and a mistake on any one of them is a professional-liability problem and a route to losing that client. That changes what the software has to do.

• Multi-landlord (client) scoping. Every property, tenancy and payment belongs to a specific landlord client. You need to slice the whole system by client at any moment.
• Per-client reporting. A one-click statement per landlord — income vs expected, arrears, compliance status — is what wins the renewal conversation at review time.
• Portfolio-wide compliance. One dashboard that tracks RTB registration, renewal, rent review and Part 4 across every tenancy, so nothing slips across dozens of landlords.
• Reconciliation across client accounts. Rent arriving in one or more bank accounts, matched to the right tenancy automatically.
• Team roles and agency/branch structure. Administrators, negotiators and principals need appropriate access; a single-user app doesn't scale to a team.

The value metric for an agency is tenancies managed, not a single property. Keep that in mind when you read pricing pages — a tool priced per landlord-user can get expensive fast, while flat per-portfolio tiers are easier to budget.

The agency software evaluation checklist

Before you look at a single product, write down what your agency does every week. Then score each tool against it. Here's a starting checklist tuned to Irish lettings in 2026:

The tools below each win on some of these and lose on others. The honest answer to "which is best" is "best at what?"

Why generic UK/US tools miss the Irish-specific work

It's tempting to reach for a big, polished international platform. The problem isn't quality — it's fit. The Irish rental system has work that no global template performs:

• The RTB Form 1. Every Irish tenancy must be registered with the Residential Tenancies Board, now annually. A US or UK tool has no concept of it.
• The national rent cap. Since 1 March 2026, rent can rise at most once a year by 2%, or by inflation (CPI) if lower — nationwide, after Rent Pressure Zones were phased out. That maths isn't in a generic tool.
• Part 4 and the 6-year Tenancy of Minimum Duration. The post-reform tenancy framework, including the small-landlord (≤3) vs large-landlord (≥4) distinction, is Irish-specific.
• Irish-bank reconciliation. Matching rent paid through AIB, Bank of Ireland, PTSB, EBS, Revolut or N26 needs Open Banking connections to those institutions.

So the realistic field for an Irish agency is narrower than the internet suggests: Irish-built tools, and a small number of UK/global tools that genuinely operate here. That's the shortlist below.

The 2026 shortlist for Irish letting agents

Six options worth your time, with the honest "best for" up front. We've put TenantSync first because this guide is published by TenantSync — but we've been specific about where each of the others is the stronger choice, because you'll verify it anyway.

1. TenantSync — Irish RTB compliance & rent automation

Best for: small and medium Irish agencies (roughly 30–300 tenancies) whose biggest pain is staying RTB-compliant across many client tenancies and getting rent reconciled without manual grind.

TenantSync is an Irish-built platform designed around the two things agents now spend the most anxious time on: RTB compliance and rent reconciliation. It drafts and finalises the Form 1, computes the national rent cap and shows its working, tracks registration, renewal and Part 4 deadlines on a portfolio-wide dashboard, and auto-matches incoming rent to the right tenancy via Open Banking. It runs on web plus iOS and Android, includes a landlord and tenant portal, and imports directly from Letman.

Where it's not the answer: if your operation is built on full client-account (trust) accounting with SEPA payment runs, that's not TenantSync's core — see Letman below. TenantSync is also a newer, smaller company; we'd rather say that plainly than invent customer numbers.

2. Letman — Irish client-account (trust) accounting

Best for: established PSRA-licensed agencies whose centre of gravity is client money — knowing exactly what belongs to the landlord, tenant, contractor and agency, with SEPA landlord and supplier payment files.

Letman is a long-established Irish lettings and property-management system (on the market since 2003, by Topfloor). Its strength is full client-account accounting, plus the MYletman landlord/tenant portal, tenancy agreements, inspections and document management. It's built to comply with the Residential Tenancies Act 2004, the Property Services (Regulation) Act 2011 and the Client Moneys Regulations. If trust accounting is the heart of your agency, Letman was designed around it. (For a deeper head-to-head, see our honest Letman comparison.)

3. Re-Leased — commercial & mixed portfolios

Best for: agencies and asset managers handling commercial or mixed-use property rather than pure residential lettings.

Re-Leased is modern, cloud-based property management software purpose-built for commercial and mixed portfolios, with strong lease management, accounting and a tight Xero integration, and a team active across the UK & Ireland. If your book is residential RTB tenancies, it's optimised for a different problem; if you manage commercial space, it's a serious contender.

4. Arthur — flexible UK residential lettings platform

Best for: agencies that want a flexible, general-purpose residential lettings platform and don't need Irish compliance automation baked in.

Arthur (Arthur Online) is a well-regarded UK-built property management platform covering lettings agents, landlords and student/social housing, with maintenance, rent collection, tenant comms and iOS/Android apps. It's flexible and configurable — but it's configured around the UK market, so the RTB Form 1, the national rent cap and Irish-bank reconciliation aren't native. Expect to layer Irish compliance on top manually.

5. PayProp — rent collection & payment reconciliation

Best for: agencies whose single biggest pain is the payment workflow — collecting rent, reconciling it and distributing to landlords, agents and contractors.

PayProp is a specialist rental payment and reconciliation platform, strong on automated collection, allocation and client accounting, widely used by UK letting agents. If you're drowning specifically in payments, it's purpose-built for that — but it's a payments engine, not an Irish RTB-compliance system, so you'd pair it with something that handles registrations, the rent cap and Part 4.

6. Spreadsheets — the default you're probably leaving

Best for: a handful of tenancies, and not much more.

Most agencies start in Excel or Google Sheets, and it's free and infinitely flexible. The trouble is that compliance across many landlord clients isn't a spreadsheet problem — one missed renewal date or a mis-calculated rent review can cost you a client or land you in an RTB dispute. Spreadsheets don't remind you, don't reconcile a bank feed, and don't generate a client report. They're the baseline every tool on this list is trying to beat.

At-a-glance comparison

Where we can verify a capability from public sources, we've stated it. Where a capability isn't publicly documented for a product, we've said "check with provider" rather than claim it's missing — confirm anything decision-critical directly with each vendor.

The pattern is clear: TenantSync leans into Irish compliance automation and bank-feed reconciliation; Letman into client-money rigour; Re-Leased into commercial; Arthur into flexible UK residential; PayProp into payments. None is "best" in the abstract.

Recommendation by use case

Many small and medium Irish agencies land on TenantSync precisely because their pain is Irish compliance at portfolio scale plus reconciliation — the part global tools and spreadsheets leave on your desk.

What an agency should actually pay (as published, June 2026)

These products price on different models, so compare the total monthly cost at your portfolio size, not the headline figure. Pricing below is as published in June 2026 — always confirm on each provider's own site.

A useful sanity check: divide the monthly fee by your number of tenancies to get a cost-per-tenancy. Then weigh it against the cost of one missed RTB registration, an unwound illegal rent increase, or a lost landlord client — which is what good software is really insuring you against. TenantSync includes a 14-day free trial and the landlord/tenant portal in every plan; compare plans for your portfolio size.

Switching without losing a tenancy

The most common reason agencies stay on the wrong tool is fear of the move. The honest version: a well-run migration is a few hours, not a few weeks — if the new tool imports cleanly and someone helps you validate the dates that matter.

If you're still on spreadsheets, our step-by-step guide to how Irish agencies and landlords weigh self-management against software is a useful companion read, and the 2026 RTB compliance checklist is a good way to audit what you're tracking today before you move.

Frequently asked questions

What is the best property management software for Irish letting agents in 2026?

There is no single best tool for every agency — the right choice depends on which job hurts most. If your priority is RTB compliance across many client tenancies, the national rent cap (2% or CPI, whichever is lower) and automatic rent reconciliation, an Irish-built platform like TenantSync is designed around exactly that. If your centre of gravity is full client-account (trust) accounting with SEPA landlord and supplier payment runs, Letman is the established Irish choice. Commercial and mixed portfolios point to Re-Leased; agencies that want a flexible general lettings platform often look at Arthur; and payment-automation-led agencies look at PayProp. Map your must-haves first, then shortlist against them.

What features do letting agents need that single-landlord apps do not have?

Agencies manage tenancies on behalf of many landlord clients, so they need things a single-landlord app rarely has: multi-landlord (client) scoping and per-client reporting, a portfolio-wide compliance dashboard so no RTB deadline slips across dozens of tenancies, bulk RTB workflows, agency or branch user roles, reconciliation across one or more client bank accounts, and a landlord and tenant portal. The value metric is the number of tenancies managed, not a single property.

Can I use Buildium, AppFolio or other US property management software in Ireland?

Generally no. Large US platforms such as Buildium and AppFolio are built and sold for the United States and Canada and are not offered for residential lettings in Ireland, and even where a global tool is available it will not handle Irish-specific work — the RTB Form 1, the national rent cap calculation, Part 4 tracking, or reconciliation against Irish banks. Irish letting agents are better served by tools built for, or properly localised to, Irish residential tenancies law.

Does property management software handle RTB registration and the national rent cap?

Only if it is built for Irish law. Most general property management tools do not draft the RTB Form 1 or calculate the legal rent cap. TenantSync does both: a Form 1 draft-to-finalise workflow with the 30-day registration deadline computed from the tenancy start date, annual-renewal and Part 4 tracking, a multi-obligation compliance dashboard, and a rent-cap calculator that returns the maximum legal increase under the post-March-2026 national rules (2% or CPI, whichever is lower) and shows the rule and figure it used.

How much does lettings software cost for an Irish agency?

Pricing models differ, so compare on total cost for your portfolio size rather than the headline number. TenantSync uses all-in tiers: Standard €99 per month (up to 100 properties), Growth €149 (up to 200) and Premium €199 (up to 300), with a €20 Starter for up to 10 properties and custom Enterprise pricing, plus a 14-day free trial; the landlord and tenant portal is included. Letman's published pricing starts at about €195 per month for up to 100 managed units plus €0.60 per unit per month for its portal. Arthur lists plans from around £70 per month, PayProp typically charges a small percentage of processed rent plus a one-off setup fee, and Re-Leased is quote-based. Always confirm current pricing on each provider's own site.

Can I move my agency off Letman or spreadsheets without losing data?

Yes. TenantSync provides a direct Letman import plus CSV and spreadsheet import, so properties, units, tenancies, leases and rent details move across without rekeying, and done-with-you onboarding validates your RTB dates and runs your first reconciliation. Map your must-have features before switching — if full client-account (trust) accounting with SEPA payment files is core to how you operate, evaluate that requirement carefully, as it is one of Letman's strengths.

Sources & further reading

Facts in this article are drawn from official and primary sources and each provider's public materials. Pricing and product details were correct as published in June 2026 — verify on each provider's own site before deciding.

• Residential Tenancies Board — Rental law changes from 1 March 2026 and registration fees
• Citizens Information — Changes to the rules for renting from March 2026
• Government of Ireland — Reforms to the rental sector, starting 1 March 2026
• Letman — letman.ie (features and pricing)
• Re-Leased — re-leased.com (commercial property management)
• Arthur — arthuronline.co.uk (features and pricing)
• PayProp — payprop.com (rental payment platform)