\documentclass[twoside]{report}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Packages %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\raggedbottom
\usepackage{ninecolors}
\NineColors{saturation=low}

%\usepackage{showframe}
%\renewcommand*\ShowFrameColor{\color{red}}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Fonts %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Choose either kpfonts or fourier
% \usepackage[nott]{kpfonts}
\usepackage{fourier}


% Delete any of the following that are not needed
\usepackage{microtype} % Make things neater. 
\usepackage{tabularray} % Easy tables


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Document Setup%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{geometry}
\geometry{
	paperheight = 8.5in, 
	paperwidth  = 5.5in, 
	margin      = 10mm,
	top         = 3mm,
	headsep     = 1mm,
	footskip    = 1mm,
	foot        = 0mm,
	bottom      = 1mm,
%	a5paper % Comment out for half-letter paper
}

\addtolength{\topmargin}{10mm} % Adjust and bottom margin
\addtolength{\textheight}{-20mm} % Adjust the bottom margin


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Page Headers%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Adjust the TITLE as necessary
\usepackage{fancyhdr}
\pagestyle{fancy}
 \fancyhf{}
 \fancyhead[LE,RO]{\textit{Account Register}}
 \fancyhead[RE,LO]{Account: \hspace{35mm}}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Document Information %%%%%%%%%%%%%%%%%%%%%
%% Adjust the TITLE and SUBTITLE as necessary
\title{
 {\Huge Account Register} \\
 {\vspace{30mm}
 Account: \rule[-1mm]{5cm}{0.15mm} \\
 }
 \date{}
}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Table Elements %%%%%%%%%%%%%%%%%%%%%%%%%%%

\NewTblrTheme{blank}{
    \DefTblrTemplate{firsthead}{default}{}%
    \DefTblrTemplate{middlehead,lasthead}{default}{}%
    \DefTblrTemplate{contfoot-text}{default}{}%
    \SetTblrStyle{presep}{0pt}%
    \SetTblrStyle{postsep}{0pt}%
}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Macro for table %%%%%%%%%%%%%%%%%%%%%%%%%%

\newcommand{\kreg}{
\noindent{}\begin{longtblr}
[
%	caption = {},
%	label   = {tb:},
	theme   = {blank}
]{
%	width      = {\textwidth},
	colspec    = { X[2,c] X[2,c] X[9,l] X[2,c] X[0.9,c] X[2,c] X[0.9,c] X[2.2,c] X[0.9,c] },
	hlines     = {0.5pt,solid},
	vlines     = {0.5pt,solid},
	rows       = {5mm, m, rowsep=1.5pt},
	rowhead    = 1,
	cells	   = {font=\fontsize{7pt}{12pt}\selectfont},
	row{1}     = {font=\bfseries\fontsize{7pt}{12pt}\selectfont},
	row{odd}   = {bg=gray8},
	row{even}  = {bg=white},
	row{1}     = {bg=white},
}
Type & Date & Description & \SetCell[c=2]{c} Debit && \SetCell[c=2]{c} Credit && \SetCell[c=2]{c} Balance \\
 &&&&&&&& \\
 &&&&&&&& \\
 &&&&&&&& \\
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 &&&&&&&& \\
 &&&&&&&& \\
\end{longtblr}
}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Let's get it started %%%%%%%%%%%%%%%%%%%%%

\begin{document}
\maketitle

\kreg
\kreg
\kreg
\kreg
\kreg
\kreg
\kreg

\kreg
\kreg
\kreg
\kreg
\kreg
\kreg
\kreg
\kreg

\end{document}