Know your visa & tax days before you book — not after the border does
Brain · loading
⚠️ Decision support, not legal or tax advice. Rules carry a confidence + as-of date; anything LOW or stale is shown as "verify", never asserted. Click any ⓘ source for cited passages from the brain (in-browser, zero-egress) — it abstains when out of scope. Your data stays on this device.
Schengen Area · 90/180 ⓘ source
–days remaining
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– of 90 days used in the rolling 180-day window (shared pool across all member states · entry & exit days both count).
I hold a residence permit / nomad visa for — (dual-quota)
Alerts
Plan a future route — legality check
Trip ledger
Country
Entry
Exit
Days
Zone
Permit?
Per-country exposure (visa + tax residency)
Bordermath · · ruleset · built 2026-06-24 Illustrative rules · cited, zero-egress retrieval · not legal, tax, or financial advice · hello@agni.work
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Rule
From the Bordermath brain — cite-or-abstain
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Add your trips
Three ways in — pick whatever's least effort.
1 · Paste a flight confirmation email
Paste any airline/booking confirmation. We extract the flights and propose your country stays — nothing is added until you confirm.
2 · Forward to your inbox — with an account
Sign in (email code) on the hosted app to get a private forwarding address like trips.<your-token>@inbound.bordermath.app. Forward confirmations there and they appear here to confirm. Built & tested; activates on deploy.
3 · Manual
One per line: Country, YYYY-MM-DD, YYYY-MM-DD
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Audit log
Every verdict records the ruleset version + timestamp that produced it (traceability, PRD P0.7). Newest first.