Free Calculator — Instant Access

Most landlords miss
40% of their void costs.

Council tax, utility standing charges, and re-letting fees add 40% on top of the rent you've already written off. Enter your numbers and see the real damage — then download the prevention checklist.

📋 6 cost inputs🔍 Itemised breakdown✅ Prevention checklist📄 PDF export
6
Cost inputs
10
Checklist items
1.7×
Typical multiple
Free
PDF export

See what your void is actually costing you

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Preview — what you'll get

Void Cost — 4 weeks · £900/mo
1.7× rent
Rent lost (4 weeks)£831
Council tax (landlord pays)£129
Utility standing charges£120
Re-letting costs£250
Redecoration / refresh£200
True void cost£1,530
Download full report + checklist

The numbers most landlords don't know

💷
£2,300+

True cost of a 6-week void on a £900/month property — all costs included

📊
42%

Of void costs that aren't lost rent — council tax, utilities, and re-letting fees

⏱️
8 weeks

Average void duration when landlords aren't actively managing re-let timing

🔁
1 in 4

Landlords who experience two or more voids on the same property in a year

Numbers are indicative based on a typical UK BTL property. Your calculator result will be specific to your property and circumstances.

How it works

From inputs to action plan

Two minutes. Pre-loaded with a realistic example. Change any number and the total updates instantly.

1

Enter your numbers

Six inputs: monthly rent, expected void length, council tax, utility standing charges, re-letting fees, and redecoration budget.

2

See the true cost

Instant itemised breakdown showing rent lost, council tax liability, carrying costs, and re-letting spend — and the total.

3

Download your report

One click exports a PDF with the full calculation plus the void prevention checklist — 10 actions to reduce re-let time.

What's included

More than a rent calculator

The full picture — every cost line, the prevention plan, and a PDF to keep.

📋

6-input calculation

Monthly rent, void duration, council tax, utility standing charges, re-letting fees, redecoration. Every real cost modelled.

🔍

Itemised breakdown

See exactly where the cost comes from — rent lost vs. fees vs. carrying costs. The breakdown is often the eye-opener.

📈

True cost multiple

How many times your obvious rent loss the void actually costs. For most landlords it's 1.5–2×. Rarely what they expected.

🗓️

Annual impact

Model the cumulative drain if this void frequency repeats — important for anyone reviewing portfolio cashflow.

✅

Void prevention checklist

10 specific actions that reduce time-to-relet: when to re-market, what to fix first, how to frame a renewal conversation.

📄

PDF export

Full calculation with itemised breakdown plus the prevention checklist — ready to share with a broker or review with your accountant.

Why this matters

Voids are the most controllable risk in BTL

Most landlords undercount the cost — Lost rent is obvious. Council tax, utility standing charges, advertising costs, and re-letting fees aren't. This calculator shows the full picture.
Knowing the number changes decisions — When you know a void costs £1,530, a £50 rent freeze to keep a good tenant for another year becomes an obvious trade-off.
Re-let timing is the biggest lever — Starting marketing 8 weeks early vs. 2 weeks early can cut void duration in half — the prevention checklist covers exactly when and how.
Useful for any void scenario — Planning for a likely void, mid-void review, or retrospective analysis after the fact — the calculator works for all three.
Portfolio landlords: model the annual picture — The annual impact figure shows what repeated voids are costing across a portfolio year — often the most useful output for multi-property owners.

"I thought my 5-week void cost me £1,000. This calculator showed it was £1,780. That gap made me completely change how I handle tenant renewals."

Buy-to-let landlord— 3 properties, Manchester

"The council tax bit catches everyone out. I was paying nearly £160/month during the void and hadn't counted it. The true cost was a proper shock."

Self-managing landlord— Bristol

"I used this before my agent's renewal conversation. Knowing the void cost gave me a completely different perspective on offering a slight rent freeze to keep a good tenant."

Portfolio landlord— 6 properties, Liverpool
Free — Instant Access

Stop guessing what your void costs.
Start preventing the next one.

Takes two minutes. Pre-loaded with a realistic example. Change any number and see the result immediately.

No credit card. No spam. Instant access.