I firmly consider shopping for shares and shares is without doubt one of the best methods to generate a passive income.It’s additionally probably the most accessible methods to generate passive income, in my view. Indeed, anybody can purchase shares and shares with simply a few kilos. Other methods require hundreds, or lots of of hundreds, of kilos to generate such an income.However, this technique won’t be appropriate for all. Dividend income generated on shares isn’t assured. Dividend income is paid out of income. Therefore, if a firm’s income all of the sudden decline, administration could have to scale back the payout.Still, I’m comfy with the extent of danger concerned in shopping for shares and shares for a passive income. And I believe it might be attainable to generate one with an funding of as little as £500 a month.This is the technique I’d use.Passive income techniqueAn funding of £500 a month just isn’t going to allow me to achieve millionaire standing quick. Nevertheless, I believe it would put me on the appropriate path as this cash will virtually instantly begin producing income. Moreover, by reinvesting it again into the market, I can create a virtuous cycle.I’d invest my £500 a month in a portfolio of blue-chip shares. I’d purchase corporations which have strong aggressive benefits and powerful manufacturers. Some examples are Unilever, Diageo and BAE Systems. These shares provide dividend yields of between 2% and 5%.I consider that concentrating on a vary of shares with totally different dividend yields is the appropriate method. Focusing solely on corporations with excessive dividend yields could expose me an excessive amount of danger. An unusually excessive yield can signify that the market doesn’t consider the payout is sustainable, though it’s not a assure.Some analysis reveals that corporations with decrease dividend yields achieve higher dividend development in the long term, though as soon as once more, this isn’t a assure.DiversificationAs properly as the businesses outlined above, I’d additionally purchase an funding belief for my passive income portfolio.Story continuesThe firm I’d concentrate on is the City of London Investment Trust. This belief owns a portfolio of income shares and shares, which is managed by skilled funding managers.Not solely does this present a excessive stage of diversification, however funding trusts have a distinctive trait, which may make them wonderful income investments. They can maintain again 25% of their income yearly. This can then be utilized in durations when dividend income from the portfolio declines to fill within the hole. This got here in notably useful final 12 months.The one draw back of utilizing this method is that I can’t select the investments within the portfolio. This might expose me to some corporations I’d relatively not personal. The belief might additionally underperform the market.Despite these dangers and challenges, I believe the belief would match completely into my £500 a month passive income portfolio.The publish How I’d invest £500 a month to achieve a passive income appeared first on The Motley Fool UK.More readingRupert Hargreaves owns shares of Diageo and Unilever. The Motley Fool UK has advisable Diageo and Unilever. Views expressed on the businesses talked about on this article are these of the author and due to this fact could differ from the official suggestions we make in our subscription companies corresponding to Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we consider that contemplating a various vary of insights makes us higher traders.Motley Fool UK 2021