statements,  and  the  company's  goal  to  achieve  optimal  profit  levels  reflects  the 
performance of Islamic banks. 
The performance of Islamic banks is an important key to determine the position of 
Islamic banks in the banking world. In Indonesia, the performance of Islamic banks is 
measured  as  reported  by  Bank  Indonesia  (BI)  using  financial  information,  such  as 
assets, financing, pooling of funds, capital, and profitability (Bank Indonesia, 2007). 
This information is also used to measure the performance of conventional banks. But 
in principle there is a difference between Islamic banks and conventional banks, namely 
in Islamic banks there are profit sharing principles while in conventional banks use the 
principle of interest (Antonio M. S., 2001). The performance of Islamic banks can be 
measured in various aspects. In this study, aspects of Islamic bank performance used 
are  fixed  assets,  third  party  funds,  and  five  24  financial  ratios,  namely  the  ratio  of 
operational efficiency measured by OER, liquidity ratios measured by NPF and FDR, 
profitability ratios measured by ROA, and solvency ratios measured by CAR  (Kasmir, 
2008). 
In this study, researchers wanted to further test the research conducted by Nasuha 
(2012), Siswantoro (2014) dan Al Arif (2017) comparing the three policies establishing 
Islamic banks. Al Arif (2017) see that spin off policies affect financial performance 
using influence analysis. The difference between this research and the previous research 
is that this study uses MANOVA for different tests so that it really distinguishes inter-
bank performance after changing to BUS. This research becomes important to prove 
from the way of their establishment which gives the best performance. So, based on the 
description above, researchers are interested in researching more about "Differences of 
Islamic Bank Performance Based on Establishment Method: Evidence from Indonesia. 
In  this  case  the  researchers  took  samples  from  the  BUS  with  the three methods of 
separation, namely the way of spin off, acquisition and mergers, as well as conversion, 
namely  BNI  Syariah,  BJB  Syariah,  BRI  Syariah,  Bukopin  Syariah  Bank,  Victoria 
Syariah Bank, and Aceh Syariah Bank. Analysis of financial performance in this study 
was seen from four variables. The financial performance used is OER, FDR, ROA, and 
CAR. 
The results of this study shows that there is a significant  difference among three 
establishment methods of Islamic banks. Further analysis using post-hoc test indicates 
that  Islamic  banks  established  through  acquisition  and  merger  method  have  better 
efficiency  and  capital  adequacy  compared  to  Islamic  banks  established  using  other 
methods.  While  in  terms  of  liquidity  and  profitability,  Islamic  banks  established 
through conversion method perform better than Islamic banks established using other 
methods. It suggests that Islamic banks established either using acquisition and merger 
method or conversion methods have better financial performance than Islamic banks 
established using pure spin-off method. 
The  remainder  of  this  paper  is  organised  as  follows.  The  second  section  briefly 
discusses the literature review. The third section explains  the research  methodology 
used in the study and hypothesis development. The empirical results and analysis are 
discussed in the fourth section. Lastly, conclusions are drawn in the final section with 
a brief explanation of the limitations and suggestions for future research.