Claude prompt models Spanish pensions

A Spanish pension is not one number. It is a chain of calculations — contribution history, retirement age, base reguladora, penalties for leaving early, bonuses for waiting, then income tax on top. That is why these Claude prompts caught attention. They are not “write me a retirement plan” prompts. They are more like structured worksheets that tell the model exactly which legal and financial moving parts to simulate. ### What is the prompt actually doing? Basically, it turns Claude into a scenario calculator. The user feeds in concrete Spanish retirement variables — age, years of cotización, likely retirement date, contribution bases, and whether they want to model ordinary, early, or delayed retirement. Then the prompt asks for side-by-side outcomes instead of one vague answer. That matters because pension planning in Spain is path-dependent. A person retiring at 63, 65, or 67 can land in meaningfully different places even with the same work history. ### Why is “base reguladora” the key noun? Because that is the engine under the pension amount. Spain’s Social Security uses contribution bases over a long lookback window to build the base reguladora, then applies percentages and any reduction or bonus factors on top. In 2026, the rules are in a transition period — the system starts comparing the older 300-month method with a newer, phased-in formula that can use the highest contribution bases within a broader window. So if a prompt says it models pensions but does not handle that 2026 transition, it is already drifting off course. The whole point of a structured prompt is to force the model to ask for the right inputs before producing numbers. ### Why pair pensions with IRPF? Because gross pension income is only half the story. What people actually care about is net monthly cash. (seg-social.es) In Spain, pensions are taxable income under IRPF, and the final bite depends on total income, personal situation, and the autonomous-community layer of the tax system. Galicia, for example, has its own regional scale and deductions inside the shared IRPF framework. So a second prompt that optimizes withdrawal order, pension-plan deductions, or fund transfers is trying to answer the practical question — not “what is my pension?” but “what lands in my account after tax?” ### Why mention Galicia specifically? Because Spanish tax planning is national and regional at the same time. The state handles the main machinery, but communities can change parts of the personal minimum, rate scale, and deductions. Galicia explicitly notes those powers in its IRPF guidance. (atriga.gal) That means a prompt written for “Spain” in the abstract can miss real differences once you get into regional tax treatment. For a retiree, that is not a rounding error. ### Is this really new, or just prompt theater? The interesting part is not that someone wrote a long prompt. People do that every day. The interesting part is that Spanish tax-and-pension tooling for Claude is becoming more formalized. You can now find public Claude-oriented projects for Spanish IRPF preparation, with explicit disclaimers, campaign dates, and structured workflows rather than casual chatbot instructions. (atriga.gal) One GitHub project for the 2025 tax year was updated two weeks ago; another IRPF MCP server was updated two days ago. So the pension prompt sits inside a broader pattern — people are packaging local tax logic into reusable AI workflows. ### What is the catch? The catch is that a prompt can organize reasoning, but it cannot certify facts the user enters wrong. If contribution histories are incomplete, if retirement dates are off by a few months, or if the prompt uses stale thresholds, the output can look precise while being wrong. And Spanish rules change a lot. Even the official pension calculation method is mid-transition from 2026 onward. (github.com) ### So what should readers take from this? These prompts are best understood as modeling tools, not advisers. They are useful because they force structure onto a messy problem — pension amount, retirement timing, and tax drag in one pass. But the value comes from current rules and clean inputs. Without those, you are not doing retirement planning. You are just getting fluent-looking fiction. (seg-social.es)