Spring week applications open earlier than most candidates realise. This is the complete calendar for the 2026-2027 cycle with documented deadlines, preparation windows, and the ECS framework timeline.
The Calendar That Determines Everything
Spring week applications for the 2026-2027 cycle open between September and January, but most close before Christmas. A candidate who starts preparing in January is already late for the firms that matter most. This calendar maps every major spring week and insight programme deadline in London, with the ECS preparation timeline overlaid.
The documented ECS outcomes at Morgan Stanley Spring Week (Karam Kahlon, University of Exeter), HSBC Spring Week, and Blackstone Spring Insight were all produced by candidates who started preparation before the application window opened.
The timeline
June to August (before first year of university)
This is the ideal preparation window. Most candidates do not start here because they do not know the spring week pipeline exists. Families who engage ECS during this window have the longest runway and the highest conversion probability.
What to do:
September (applications open)
The first wave of spring week applications opens in September. Goldman Sachs, Morgan Stanley, JPMorgan, Barclays, and Citi typically open their spring week applications within the first three weeks of September.
What to do:
October to November (HireVue and first-round interviews)
Firms begin processing applications in October. HireVue invitations typically arrive two to four weeks after application submission. First-round telephone or video interviews follow for candidates who clear the HireVue.
What to do:
November to December (assessment centres)
Spring week assessment centres at Goldman Sachs, Morgan Stanley, and other bulge bracket firms typically run in November and December. These are the decisive selection points.
What to do:
January to February (second-wave applications)
Some firms open a second wave of spring week applications in January. HSBC, Deutsche Bank, and several mid-market firms typically have January deadlines.
What to do:
March to April (spring weeks take place)
Spring weeks themselves run during the Easter vacation or spring term break, typically one week in duration.
What to do:
May to June (summer internship offers)
Firms typically extend summer internship offers to spring week attendees within four to six weeks of the spring week ending. Some firms make offers on the final day of the spring week.
What to do:
The ECS preparation timeline overlaid
| Window | ECS framework | Purpose | |---|---|---| | June to August | Commercial Fluency + Diagnostic | Foundation building, firm research, scheme selection | | September | STAR-3 | Written application engineering | | October to November | PEAL-3 | HireVue and first-round interview preparation | | November to December | VTMR + BDC + PEAL-X | Assessment centre preparation | | March to April | Pre-spring-week briefing | Conversion strategy for the week itself | | May to June | Offer-Engineering System | Offer negotiation and acceptance |
The key insight
The candidates who secure spring week offers at Goldman Sachs, Morgan Stanley, and Blackstone are the candidates who start preparation before September. The application window is short (September to January). The preparation window is long (June to January). The candidates who compress all their preparation into the application window produce weaker applications than the candidates who build their commercial awareness, competency answers, and firm-specific knowledge over the summer.
This is why ECS recommends that families with children entering their first year of university engage for a diagnostic call in June or July, not September.
How to start
Apply at https://www.accessecs.com/start. The diagnostic is a private forty-five-minute conversation. A parent must be present when the candidate is under twenty-two.
Frequently asked
When should my child start preparing for spring week?
June or July before the first year of university is ideal. September (when applications open) is the latest start that still allows full preparation. January is too late for the firms that matter most.
Which spring weeks are the most competitive?
Goldman Sachs, Morgan Stanley, and JPMorgan spring weeks in London are the most competitive by application volume. Blackstone Spring Insight is the most competitive by acceptance rate. ECS has documented outcomes at all four.
Can a second-year student apply for spring week?
Most spring week programmes are designed for first-year students. Some firms accept second-year applicants, but the primary pipeline is first-year. If your child is in their second year, the summer internship application (opening September of second year) is the primary target.
How do I apply to ECS?
Apply at https://www.accessecs.com/start. ECS works with thirty private clients per year. A parent must be present on the diagnostic call.
Apply the Frameworks With Guidance
Book a diagnostic call with Hassan.
The diagnostic is a structured, no-obligation call to assess your specific position, identify the gaps in your current approach, and determine whether an ECS Private Client Advisory engagement is the right investment.
Apply for a Diagnostic