The federal government taxes most sources of retirement income, including pension benefits, but the states take a variety of approaches to taxing retirement income. Some states tax any retirement income that the federal government taxes.
Each page contains about 34 lines, with an average word count of 11 words per line, thus 375 words per page. Excluding endnotes and index, the book has about 200 pages of text, which means its total word count is about 74,000 words.
If using 12 point Times or Times Roman font, it's about 10 English words per line, on average. Further, that font and size will put 49 single-spaced lines on a page. So, under those assumptions, an average word count would be 490 words on a single spaced page, or 245 on a double-spaced page.