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Domain Portfolio Carry Cost Calculator

Paste your list and see the whole bill at once: what the portfolio costs you every year, what you have sunk into it so far, and which names are the most expensive to keep. Most owners have never added it up.

Nothing is uploaded. The math runs in your browser, and up to 500 names are read at a time.

Common questions

What is domain carry cost?

Carry cost is what a portfolio costs you to keep for another year: the sum of every renewal fee across every name and registrar. Sunk cost adds what you paid to acquire the names plus every renewal you have already paid.

Do I need an account to use this?

No. There is no signup, no email, and no account. Your list is parsed in your browser and nothing is sent to a server unless you press the optional live registry check.

Where do the renewal prices come from?

Each name starts at a rough retail renewal price for its extension, and every figure is editable. Registrar pricing varies, so replace the defaults with what you actually pay for a true number.

How do I decide what to drop?

Rank names by what they cost you every year against what you would realistically sell them for. The ranked list here surfaces the expensive tail first, which is where an annual cull usually pays for itself.

The Sourdough App

Records that keep themselves current

Live registry sync keeps expiry, registrar, nameservers, and status current. Carry cost and cost basis make the annual cull a decision instead of a guess.

Renewal alertsCost basis & P&LEvery registrarCSV import

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Put this into practice

Start your 7-day trial

Bring every domain into one current, registry-checked view with renewal and cost context.

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Live registry enrichment7-day trial$0 due todayProof: live_rdap

Put this into practice

Start your 7-day trial

Bring every domain into one current, registry-checked view with renewal and cost context.

Start your 7-day trial
Live registry enrichment7-day trial$0 due todayProof: live_rdap

Email resource

Free Domain Renewal Risk Audit

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Put this into practice

Start your 7-day trial

Bring every domain into one current, registry-checked view with renewal and cost context.

Start your 7-day trial
Live registry enrichment7-day trial$0 due todayProof: live_rdap