The earliest mention of tax resistance I was able to find in The Vote is this one from its issue:
No Vote, No Tax.
On a sale was held at 45, Parker Street, Kingsway, of jewellery seized in distraint for income-tax, which Miss Marie Lawson, managing director of the Minerva Publishing Co. and member of the National Executive Women’s Freedom League, had refused to pay. Members of the W.F.L. and Mrs. [Edith] How Martyn (Hon. Sec.) assembled to protest against the proceedings, and the usual policeman kept a dreary vigil at the open door. The day had been specially chosen by the authorities, who wished to prevent a demonstration, and the auctioneer, on his arrival, appeared to treat the whole affair as a joke, gently rallying the women on what he was pleased to term “the trouble they had given him in coming there.” Mrs. How Martyn pointed out to him that the Government through its officials had shown itself at all times quite ready to go to an infinitude of trouble to appropriate the women’s money, but had taken none to give them any voice in the expenditure of that money. These protests were being made with a special purpose to show the Government that taxes on earned income would not be paid by women workers unless the same return was made to them as to men, i.e., representation by means of votes.
In refusing to pay income tax women have a strong weapon against the Government, and the more protests of this kind and the more trouble the authorities are put to in collecting the money, the sooner will politicians realise the power that is behind the movement. If Suffragists would consider for a moment that in paying income-tax they are in a measure acquiescing in their present unfranchised condition there would be a greater number of refusals to pay. Mr. Winston Churchill himself impressed on the passive resisters, in a speech at Dundee, the great value of this form of protest and what this astute man regarded as likely to be successful in the hands of passive resisters is surely good enough for suffragists.