When Your Student Visa Insurance Must Start
Two rules decide your start date, and they do not line up. Consular practice measures the insured period from one month before your course begins. Sanitas policies begin on the first day of a month. If your course starts mid-month, those two rules pull in different directions — and the month you choose is the difference between a complete visa file and a returned one.
The period your cover has to fill
The statutory requirement for student authorisations sits in Real Decreto 1155/2024, article 35(i): a health insurance policy, from an insurer authorised to operate in Spain, with benefits similar to the basic common portfolio of the Spanish national health system, valid for the whole intended stay. (The old RD 557/2011 was repealed on 20 May 2025 — guides still citing it are out of date.)
"The whole intended stay" is longer than your course. Article 55.2 defines the authorisation as running from one month before the course start date until fifteen days after it ends. That is the window consulates check your insurance against, so those margins are the dates that matter — not your enrolment dates on their own.
Policies begin on the first of a month
The Sanitas International Students plan starts on the first day of a month and is arranged in whole months, from three to fourteen. You can contract it up to six months before the start date you choose. There is no mid-month start, so the only decision you make is which month your cover begins — and the rule above means it has to be the month that is already running when your window opens.
Put the two rules together and one thing follows: always round backwards. When the one-month-before date falls mid-month, the first of that same month is your start date. Rounding forward to the next first leaves a gap at exactly the point the consulate is measuring.
What that looks like on real course dates
Take the course start date, subtract one month, then take the first of the month you land in.
| Course starts | One month before | Cover must start | The mistake to avoid |
|---|---|---|---|
| 14 September | 14 August | 1 August | 1 September — a fortnight after the window opened |
| 1 October | 1 September | 1 September | None here — the dates align exactly |
| 30 January | 30 December | 1 December | 1 January — the window opened in December |
| 2 March | 2 February | 1 February | 1 March — two days late is still late |
Now the other end of the window
The window closes fifteen days after your course ends, and cover is bought in whole months from the first — so the last month you buy is the one that contains that closing date, in full.
A course running 14 September to 12 June
Window opens 14 August, so cover starts 1 August. Window closes 27 June, so cover runs through 30 June. That is eleven months of cover for a nine-month course.
A single-term course, 1 September to 20 December
Window opens 1 August, closes 4 January. Cover runs 1 August to 31 January — six months for a course of under four. The stay is over 90 days, which is what makes it a student visa rather than a short stay (RD 1155/2024, art. 52.1).
Both examples show the same thing: the insured period you need is longer than your course, usually by two months once both margins are rounded to whole months. Price your dates rather than your course length — the quote calculator shows the figure for the period you actually need. Eligibility, premium and policy terms are confirmed before the policy is issued.
How far ahead to arrange it — and why arrival is too late
The earliest you can buy is six months before your start date. For a 1 August start, that means the beginning of February. There is no advantage in cutting it fine and there is a clear cost to it, because the certificate — the document the consulate actually reads — is only issued after your application is accepted and your payment has been processed. Neither step is instant, and neither happens at the weekend.
Leave working days before your appointment. An application started on Friday for a Monday appointment is how certificates go missing from visa files. Work backwards from the appointment, not forwards from today. How the document itself works is covered on the insurance certificate page.
Buying cover on arrival does not work for a visa application. The visa is decided before you travel, from the file you hand in at the consulate, and that file has to show cover already running from a month before your course. A policy contracted after you land cannot evidence a period that has already passed — and there is no certificate in the file at the moment it is assessed.
Three consulates that set the policy length themselves
Some posts do not simply check that cover spans the window — they specify how long the policy must run. Where that applies, the consulate's figure sets your duration, not the arithmetic above. These positions were checked on 23 August 2026; each post publishes its own document list and can change it, so confirm against yours before you buy.
The six-month mark carries other consequences too — it is the threshold for the criminal-record certificate and for having to obtain the TIE after you arrive. The 90-day mark is the one that decides which visa you apply for. Neither should be confused with the +1 month / +15 days window, which applies whatever the length of your stay.
If your course dates move
Course dates shift — late acceptances, deferred intakes, a term that starts a week later than the prospectus said. What matters is when the change reaches us relative to the policy being issued.
Before the policy is issued
Straightforward: the start month and duration are set from the corrected dates, and the certificate is issued against them. This is the main reason to tell us your dates are provisional when you apply.
After the policy is issued
Contact us as soon as you know, and ideally before your cover starts. What can be changed on an issued policy is confirmed with Sanitas for your specific case — we will tell you what is possible rather than guess.
If your course is extended
Cover is renewable. Renew before the existing policy ends so the insured period shows no gap — continuity is what the TIE process and any later renewal are looking for.
Your proof of studies — a matriculation or enrolment certificate showing the start and end dates — is required to contract the policy in any case, so the dates on it are the dates we work from.
Price the period you actually need
Enter the start month and duration from the window above and the calculator returns your exact figure — no forms, no wait.