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Owning a home — what does it really cost per month?

Not just mortgage. OZB, building insurance, eigenwoningforfait, maintenance, VvE/ground rent, mortgage interest deduction — all rolled into one number.

Calculator

True monthly cost of homeownership

Mortgage is only part of it. Add OZB, insurance, water board, maintenance reserve, VvE, erfpacht — then subtract mortgage interest deduction.

Interest rate (annual) 4.20%
Term (years) 30
OZB rate (municipality) 0.099%Typically 0.07% — 0.13%. Check your municipality.
Net monthly cost€0after mortgage interest deduction
Gross monthly€0
Tax saving /mo€0
Of which mortgage0%

What makes up your monthly cost

€0

    Cost breakdown per month

    • Mortgage (annuity)€0
    • OZB€0
    • Building insurance€0
    • Water board tax€0
    • Eigenwoningforfait€0
    • Maintenance reserve (1% WOZ/yr)€0
    • VvE€0
    • Erfpacht€0
    • Subtotal€0
    • − Mortgage interest deduction− €0
    • Net monthly cost€0

    Indicative 2026 model. Opstal ~€40/mo, contents ~€20/mo and water board ~€30/mo are flat assumptions; your real bills vary. Mortgage interest deduction uses 36.97% marginal rate.

    In short

    The real monthly cost of homeownership is far more than just the mortgage. Average on €400,000 home + €320,000 mortgage 30-yr annuity 4%: (1) Mortgage interest + repayment: ~€1,530/mo gross. (2) Maintenance: Vereniging Eigen Huis norm 1% of WOZ value/yr = ~€330/mo (long-term average, lumpy with big jobs). (3) OZB (municipal property tax): 0.07-0.13% of WOZ = ~€30-55/mo. (4) Building insurance: ~€30-50/mo. (5) Contents insurance: ~€15-25/mo. (6) Water board tax: ~€20-35/mo. (7) Eigenwoningforfait (Box 1): 0.35% WOZ × marginal rate = ~€55-70/mo extra tax (offset by mortgage interest deduction). (8) VvE fee (apartment only): €100-300/mo for maintenance + reserve fund. (9) Erfpacht (ground rent) (mainly Amsterdam): €0-300/mo, can be revised on ongoing leases. Mortgage interest deduction reduces gross by ~€240/mo at 4% rate + 36.97% bracket. Net monthly cost result: ~€1,800-2,100/month for €400k home without VvE/erfpacht. Amsterdam apartment can reach €2,500/mo including VvE + erfpacht. Compare with rent: free-market rent €1,800-2,500/mo gives you nothing back at sale. Owned home builds wealth via repayment + appreciation.

    You enter

    • House price (purchase price) — What you pay at notary. For current owners: current market value or WOZ.
    • Mortgage amount + rate + term — Standard NL: 30-yr annuity (required for mortgage interest deduction since 2013). 10-yr fixed rate most chosen.
    • WOZ value (set annually by council) — Basis for OZB + eigenwoningforfait + water board tax. Often slightly below market value.
    • Municipality — Determines OZB rate (0.07-0.13% varies) + water board tax + any erfpacht regime.
    • Property type (apartment or house) — Apartment: VvE fee. Detached house: higher maintenance (no shared reserve fund). Mid-terrace: in between.
    • Erfpacht status (mainly A'dam) — Perpetual (fixed canon), ongoing (50-yr revision, shock risk), or no erfpacht (full ownership).
    • Income bracket (for deduction) — Determines value of mortgage interest deduction. Since 2024: max 36.97% (first bracket). No extra benefit at higher income.

    You get back

    • Gross monthly mortgage payment — What you actually transfer to the bank monthly (interest + repayment).
    • Additional fixed costs /mo — OZB + building + contents + water + eigenwoningforfait + (any VvE/erfpacht) = total extra burden.
    • Maintenance reserve /mo — Recommended 1% WOZ/yr = ~€250-400/mo for average home. Build yourself or via VvE.
    • Mortgage interest deduction benefit /mo — Tax benefit from mortgage interest deduction per month (lowers net cost).
    • Net total monthly cost — Real amount from your wallet, all costs + benefits combined. This is your "rent of owned home".
    • 10-yr projection + wealth built — How monthly cost shifts (rate fixed, repayment grows) + how much mortgage you pay off in 10 yrs + expected appreciation.

    The math behind it

    Net monthly cost = Gross mortgage + All fixed costs + Maintenance reserve − Tax benefit

    Components:
    • Gross mortgage (annuity): (loan × rate/12) / (1 − (1 + rate/12)^−months)
    • OZB: council rate × WOZ / 12 (per municipality varies, ~0.07-0.13%)
    • Building insurance: ~€30-50/mo based on rebuild value (often 70-80% of WOZ)
    • Water board tax: ~€250-450/yr depending on water board + WOZ
    • Eigenwoningforfait: 0.35% WOZ / 12 × your marginal Box 1 rate
    • Maintenance: 1% WOZ / 12 (average reserve)
    • VvE (apartment only): typically €100-300/mo, owner share per division deed
    • Erfpacht canon: varies per property, Amsterdam average €100-300/mo for €400k home
    • Mortgage interest deduction: annual interest × 36.97% (max since 2024) / 12, decreases yearly as mortgage pays off

    Important: maintenance is not a fixed monthly — you reserve 1% WOZ/yr monthly into separate account for occasional expenses (new boiler, roof, window frames).

    Worked example

    De Vries family — mid-terrace in Utrecht, €425,000 home, €340,000 mortgage 30-yr annuity 4.2%, WOZ €405,000:

    Mortgage monthly: annuity 4.2% over 30 yrs = €1,665/mo.
    OZB Utrecht (0.099% of WOZ): €401/yr = €33/mo.
    Building insurance: ~€45/mo.
    Contents insurance: ~€20/mo.
    Water board (HDSR Utrecht): ~€380/yr = €32/mo.
    Eigenwoningforfait: 0.35% × €405k = €1,418/yr. At 36.97% rate: tax €524/yr = €44/mo extra.
    Maintenance reserve: 1% × €405k / 12 = €338/mo to set aside.
    No VvE, no erfpacht in Utrecht-East.

    Gross subtotal: €1,665 + €33 + €45 + €20 + €32 + €44 + €338 = €2,177/mo.

    Mortgage interest deduction benefit: year 1 interest payment ~€14,000 × 36.97% = €5,175/yr = €431/mo back.

    Net monthly cost year 1: €2,177 − €431 = ~€1,746/month.

    10-yr projection: gross monthly stays €2,177, but tax benefit declines (interest down, repayment up). Year 10: interest €9,500 → benefit €292/mo. Net cost year 10: ~€1,885/mo. On the other side: built equity via repayment €76,000 + expected home appreciation at 2.5%/yr inflation + 1% real = ~€138k. 10-yr net result: monthly €1,800 paid = €216k spent, of which €76k to own equity + appreciation €138k = your wealth €138k extra compared to renting.

    How to read the result

    1. Mortgage is <75% of true monthly cost
      Average €400k home: mortgage ~€1,500/mo, total real cost ~€2,000/mo. Aspiring buyers chronically underestimate. Test: can you pay €2,000/mo + put 1% WOZ/yr aside for maintenance? Otherwise: too expensive.
    2. Maintenance reserve is not optional
      Vereniging Eigen Huis: 1% WOZ/yr (~€3,500-5,000/yr for average). Seems a lot but you need it. Boiler €3,500 (every 15 yrs), new windows €15-25k (every 25 yrs), roof €15-30k (every 40 yrs). Not reserving = big-expense panic. Separate savings account helps discipline.
    3. Mortgage interest deduction benefit declines yearly
      Year 1 you pay much interest, little repayment → lots of deduction. Year 20 reversed. Effect: year 1 tax benefit ~€430/mo. Year 20: ~€180/mo. Tax benefit works mainly early in mortgage — beware "first-few-years-looks-cheap" illusion.
    4. VvE fee is half reserve
      Good VvE: 50% of fee goes to reserve fund (mandatory since 2018: 0.5% rebuild value or MJOP). Other 50% running costs (cleaning, insurance, manager). At low VvE fee <€100: probably poor maintenance → beware, backlog buildup can be costly.
    5. Erfpacht canon can suddenly rise
      Ongoing erfpacht (old type, pre-2017): canon revised every 50 yrs — risk of 5-10x rise. From €500/yr now can become €2,500/yr. Perpetual erfpacht (post-2017): fixed, annual indexing. On Amsterdam home: check erfpacht deed for revision date. Switch scheme until 2027 can buy certainty.

    Key terms

    WOZ value
    Real Estate Value — set annually by municipality. Basis for OZB, water board, eigenwoningforfait. Often slightly below market value.
    OZB
    Property Tax (municipal). Rate 0.07-0.13% of WOZ depending on municipality. Paid separately.
    Eigenwoningforfait
    Box 1 add-back for owned home: 0.35% of WOZ added to taxable income. Partially offsets mortgage interest deduction.
    Mortgage interest deduction
    Tax deduction for mortgage interest on owned-home loan. Since 2013: only with annuity or linear repayment + max 30 yrs. Deduction max at 36.97% bracket since 2024.
    VvE
    Owners' Association. Mandatory for apartments. Collects monthly fee for maintenance + reserve fund + management. Min reserve 0.5% rebuild value since 2018.
    Erfpacht canon
    Annual fee to municipality for land use. Mainly Amsterdam (~80% homes). Perpetual (fixed) or ongoing (50-yr revision).
    Annuity
    Mortgage form with fixed monthly: start much interest, little repayment — later reversed. Required for mortgage interest deduction on new loans since 2013.
    Linear
    Mortgage form with fixed repayment per month. Higher start payment, lower total interest over term. Advantage: debt clears faster.

    Frequently asked

    Should I buy or rent — which is more advantageous?

    Depends on horizon + housing market. Living <5 yrs: renting often better (closing costs + sale costs + uncertain appreciation make short-term buying unfavorable). Over 8-10 yrs: buying usually better through repayment + appreciation + mortgage interest deduction. Rule of thumb: calculate "price-to-rent ratio": house price / annual rent. Below 18 = buying favorable. Above 25 = renting favorable. Amsterdam center: often above 25. Suburbs: often below 20.

    What if I have to sell unexpectedly?

    Sale costs: broker (~1.5-2%) + notary (~€1,000) + staging (~€1,000-3,000) = ~3-4% of sale price. On €400k home: ~€15k from your pocket. Plus: selling within 5 yrs below purchase price = loss. Tip: target minimum 5 yrs in home, better 7-10 yrs for break-even after transaction costs + appreciation.

    How do I avoid maintenance panic?

    Two things: (1) Vereniging Eigen Huis recommends 1% WOZ/yr in separate savings. (2) Make multi-year maintenance plan (MJOP): list of upcoming major works (boiler year X, roof year Y) with estimated costs. Apartments have mandatory MJOP via VvE. Single home: self-prepare, varies by home age. Old home (>30 yrs): often 1.2-1.5% WOZ needed.

    How does mortgage interest deduction work?

    Mortgage interest on owned-home loan = Box 1 deductible, max at 36.97% bracket (since 2024 also at high income). Example: €14,000 interest/yr × 36.97% = €5,180 tax refund/yr. Get via May assessment or monthly via provisional refund. Deduction declines yearly (annuity: more repayment, less interest). Deduction expires after 30 yrs (from last mortgage adjustment).

    Why is my monthly cost higher than calculators say?

    Four most common reasons: (1) VvE fee not counted (apartments). (2) Erfpacht canon forgotten (mainly Amsterdam). (3) Maintenance reserve not separated — seems no cost but is (arrives as big-expense spike). (4) Poor energy label: gas/electric bill significantly higher than modern label-A home.

    Complex situations

    Edge cases that typical net-pay tools skip but actually matter for a real Dutch tax situation. Each one assumes the basic case above and tells you what changes.

    Apartment vs detached — different cost profile
    Apartment: VvE fee (€100-300/mo) covers common maintenance + reserve fund + insurance. Advantage: predictable monthly, less own responsibility. Downside: VvE meetings + sometimes high contributions on major maintenance. Detached: no VvE but own responsibility for everything. Higher maintenance (often 1.2-1.5% WOZ/yr instead of 1%). Freedom in choices. In between: terraced or semi-detached without VvE = full own responsibility with slightly lower maintenance than detached. Tip: on apartment purchase always MJOP + VvE financial situation check.
    Amsterdam erfpacht — ongoing or perpetual?
    Amsterdam: ~80% homes on erfpacht. Perpetual (since 2017): fixed canon + annual indexing. Predictable. Ongoing (old type): canon revised every 50 yrs — on revision canon can rise 5-10x. At €500/yr now possibly €3,000/yr after revision. Switch scheme: until 2027 you can switch from ongoing to perpetual, buy out at once or keep paying annually. Buyout: often €50-150k for 50 yrs certainty. Calculation per situation. Sale effect: buyers often pay more for perpetual than ongoing — on ongoing near revision: sale price drops €30-60k.
    Energy label impact — modern vs old
    Energy label A+++ (modern, well-insulated): energy costs €100-150/mo. Label E/F/G (old, poor insulation): €250-450/mo. Difference over 30 yrs: ~€60-100k extra energy costs on poor-label home. Insulation investment: roof insulation + cavity wall + HR++ glass + heat pump = €30-50k. Payback 8-15 yrs depending on energy prices. Plus: energy-efficient mortgage: up to 106% of value lendable for renovation. NHG limit higher for energy-efficient homes (€461,100 instead of €435,000). Effect on home value: A+++ home 10-15% more valuable than same home at G-label.
    WOZ objection — free €100-300/yr savings
    Council sets WOZ value annually. Suspect too high: object within 6 weeks of receipt. No-Cure-No-Pay agency (e.g., WOZ-bezwaar.nl, Eerlijkebezwaar.nl): free to you, get fee from council on successful objection. 30-50% success rate. Lower WOZ: less OZB + less eigenwoningforfait + less water board. Effect: ~€100-300/yr savings. Do it annually free — most people forget.
    Mortgage refinancing — when worthwhile?
    On large rate decline: refinance old high-rate mortgage to lower rate. But watch penalty interest: on early ending of fixed-rate period you pay penalty interest (compensation to bank). Calculation: penalty vs interest savings over remaining period. Rule of thumb: refinancing worthwhile if rate savings >1% over remaining fixed period. Mortgage advisor can calculate if worth it (advice cost €1,500-3,000, often offset by rate savings). Watch out: refinancing does NOT restart the 30-yr mortgage-interest-deduction period.
    Mortgage payoff vs invest — what's smarter?
    Extra mortgage payoff lowers debt + monthly cost + total interest. But: rate benefit ~3-4% (after mortgage interest deduction effectively ~2-2.5%). Investing historically ~5-7% real return. Mathematically: investing wins long-term. Emotionally: debt-free feels better. Compromise: 50/50 split. Above all: ensure NHG surplus or mortgage ≤ 90% WOZ — lower-rate category (lower risk rate). Plus: at retirement you want debt-free for low monthly cost.

    What this tool doesn't do

    This tool calculates total cost of homeownership for typical NL situation. Many complex situations are worked out above. Out of scope: mortgage abroad, recreational/holiday home (separate regime, no mortgage interest deduction), listed monument (different deduction rules), housing corporation buy-guarantee property. For your exact situation: mortgage advisor + Mijn Belastingdienst.

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