“The test of whether or not there is a reasonable excuse is an objective one. In my judgment it is an objective test in this test. One must ask oneself: was what the taxpayer did a reasonable thing for a responsible trader conscious of and intending to comply with his obligations regarding tax, but having the experience and other relevant attributes of the taxpayer and placed in the situation that the taxpayer found himself in at the relevant time, a reasonable thing to do? Put in another way which does not I think alter the questions: was what the taxpayer did not an unreasonable thing for a trader of the sort I have envisaged, in the position the taxpayer found himself, to do?”
“The obligation to make a tax return on time is nonetheless the taxpayer’s. It remains his obligation regardless of the fact that he may have delegated the task of making the return to his agent. There may be circumstances in which the taxpayer’s failure, through his agent, to comply with e.g. the obligation to make the return on time can amount to a reasonable excuse. To be such a circumstance it must be something that could not reasonably have been foreseen. It must be something exceptional.”