Overbidding Calculator — How Much Cash to Bid Over Asking (2026)

In a Dutch bidding war your mortgage is capped at the appraised value, so anything you bid above it comes from your own savings. See exactly how much cash you need to overbid — with the 2026 rules.

How much can I overbid?

In a bidding war your mortgage is capped at the home's appraised value — see how much of your bid has to come from your own savings.

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The offer

Asking price

Your bid

Expected appraised value

The market value a valuer (taxateur) is likely to report. In a bidding war this usually lands near the asking price — often below your winning bid, which is exactly where the cash gap appears.

Your maximum mortgage

Your income-based maximum from the mortgage estimator. Leave at 0 to let the appraised value be the only cap.

Savings available

Your own money set aside for the purchase — used to check whether this bid is actually affordable.

I qualify for the starter transfer-tax exemption

First home, under 35, price up to €555,000 (2026) — then no 2% transfer tax.

Own cash you need

Mortgage granted

income-capped

Own cash for the home

Transfer tax

Notary, advice, valuation

Your savings cover this bid.

See the full cost breakdown

How your bid is funded

Why overbidding costs own money

A Dutch mortgage is capped at 100% of the home's appraised market value (taxatiewaarde) — the bank lends on the lower of the price and the appraisal. Nothing above the appraisal is financeable.

So when you outbid other buyers, the valuer still reports the market value, which tends to track the asking price rather than the heat of the auction. The gap between your winning bid and that value is guaranteed own cash.

The buying costs (kosten koper) can't be added to the mortgage either, because you're already borrowing the full 100% of value. Budget those on top of the overbid gap.

The financing clause (voorbehoud van financiering) is your safety net: it lets you walk away without the roughly 10% penalty if the mortgage doesn't come through. In a hot market sellers favour bids that waive it — attractive, but it removes the escape hatch if the appraisal disappoints.

A realistic appraisal expectation protects you more than a bigger number does. In 2026 a meaningful share of purchases still appraised below the agreed price, leaving buyers — starters especially — to top up from savings. Know your own-cash ceiling before you name a price, not after the offer is accepted.

The starter exemption saves the 2% transfer tax on a first home under €555,000 (2026) — real money that can go toward the overbid instead.

This is an indication using the 2026 rules and typical buying-cost midpoints — not financial advice. The real appraised value is only known once a valuer inspects the home, and each lender applies its own policy. Nothing you enter is saved or sent; the figures stay in your browser.