-7"></a><span class="kw"><a href="https://Rdatatable.gitlab.io/data.table/reference/setkey.html">setkey</a></span>(input, fy_year, income)</span>
<span id="cb5-8"><a href="#cb5-8"></a></span>
<span id="cb5-9"><a href="#cb5-9"></a>tax_table2[input, roll =<span class="st"> </span><span class="ot">TRUE</span>] <span class="op">%&gt;%</span></span>
<span id="cb5-10"><a href="#cb5-10"></a><span class="st">  </span>.[, tax <span class="op">:</span><span class="er">=</span><span class="st"> </span>tax_at <span cla