Hi Mark_Mc,
I think that this may have more to do with the dynamics of typical client/professional relationships than the structural differentiation between tax consultants and accountants.
Put simply, a client who is happy with the service provided by their current provider will not change to another provider without good reason. In setting up and developing my own practice, I learned quickly that it is largely pointless to ask people directly to become my clients if they already had someone acting for them. Accounting and tax services are "relationship services", ie built on the ongoing relationship between the professional and the client, and when the relationship is good, why break it? On the other hand, if they want to move, they will do so in their own time.
All one can do in building up a client base is to be patient, promote oneself as best one can (without being too pushy) concentrate on doing ones best for the clients that come in the door, build up a reputation based on quality of service, keep plugging away and before too long you will have a decent-sized client base.
My approach there would have been to go back to the accountant, propose the bones of your solution, emphasise the additional value-added to the ultimate client, but make the detail of your solution conditional on them paying you a decent fee based on the value you have provided. Its up to them to decide whether to pay this from their own resources or renegotiate their own original price to their client, on the basis that the nature of the original assignment has changed drastically in the meantime.
I know this is easy for me to say as it wasn't me who was in your position at the time, and believe me it is hard to get one's negotiation strategies right all the time, or even most of the time
Hi MandaC
You're 100% correct there. Unfortunately the country is full of people who love to rip you off if they think they can trick you into giving them something valuable and useful (in this case expertise) for nothing. The only solution there is to say the magic word "But..."